]> git.xonotic.org Git - xonotic/gmqcc.git/commitdiff
Merge branch 'master' into cooking
authorDale Weiler <killfieldengine@gmail.com>
Sat, 30 Nov 2013 18:14:04 +0000 (13:14 -0500)
committerDale Weiler <killfieldengine@gmail.com>
Sat, 30 Nov 2013 18:14:04 +0000 (13:14 -0500)
18 files changed:
TODO
ast.c
ast.h
distro/Makefile
doc/gmqcc.1
fold.c
ftepp.c
gmqcc.h
gmqcc.ini.example
intrin.c
ir.c
lexer.c
lexer.h
opts.c
opts.def
parser.c
stat.c
util.c

diff --git a/TODO b/TODO
index 8652ed228b22b6dbe660b14f53fb12a1fb661ad7..356c4b8e386c856d4a627cd058a7f07d279d9f57 100644 (file)
--- a/TODO
+++ b/TODO
@@ -15,11 +15,6 @@ Optimizations:
             are determined via underlying equivalence, opposed to lexically identical
             expressions (CSE).
 
-        Spare Conditional Constant Propagation:
-            Simultaneously remove dead code and propagates constants. This is
-            not the same as individual dead code elimination and constant propagation
-            passes.  This is multipass.
-
     The following are optimizations that can be implemented before the
     transformation into a binary (code generator).
 
@@ -44,16 +39,6 @@ Language Features:
             - No virtuals / pure virtuals
             - Essentially "C structs but with operators" :)
 
-    Arrays:
-        They're currently implemented, but support in the engine
-        plus implicit bounds checks (and ability to turn the bounds
-        checking off)
-
-    Exceptions:
-        I feel like all languages suck at implementing this.  This would
-        require support from the engine, but it would help catch bugs. We
-        could make it fast using a neat method of "frame pointers".
-
     Overloaded Functions:
         Ability to make individual functions with the same name, but take
         different amount of arguments or type of arguments.
@@ -65,80 +50,15 @@ Language Features:
         become "default", otherwise if two arguments are specified then
         the "default" string is overrode with what ever the user passes.
 
-    Character Type:
-        A char type would be nice to have.  Essentially implemented as a
-        string, we can both "get" and "set" indices inside strings with
-        the help of builtin functions.
-
-        {
-            string foo = "test";
-            foo[0] = 'r';
-
-            print("it's time to ", foo);
-        }
-
-    Array Accessor With C-Semantics:
-        Also the ability to use them as array accessors:
-
-        {
-            float hugearray['Z'];
-
-            hugearray['a'] = 100.0f;
-        }
-
-        Keep existing "pointer-like" semantics as well.  In C arrays
-        simple work as pointers, a[1] -> *(a+1), or 1[a] -> *(1+a)
-        so we should allow both forms of syntax.  As well as operand
-        reversal.
-
-        {
-            float h['Z'];
-            *(h+'a') = 100;
-            *('a'+h) = 'a'[h];
-        }
-
-    FTEQCC Inline Assembly:
-        This is still up for debate, mainly because a) it's syntax is
-        just utter crap. b) If we do an assembler, it should be nice.
-        we could provide a -std=fteqcc for the assembler itself :P
-        just like the compiler; although I think that's just insane.
-
-        Please see Assembler below.
-
     Namespaces:
         There is already a ticket open on this. They'd work just like C++
         identically even.
 
-Standalone QCVM:
-    The following are QCVM additions:
-
-        Proper ASM disassembly:
-            Proper disassembly of compiled .dat files. Annotated if possible
-            when -g (is used during compilation)
-
-        Debugging:
-            A step-through debugger -d (with separate compilation as well)
-            Called -> qcdb  Optionally alias to qcvm -d :)
-
-            We should be able to see the assembly and source it matches to
-            and the state of OFS_* and calls.
-
 Testsuite:
     The following are things we'd like to see added to the testsuite
     in the distant future:
 
-    Multithreading:
-        Chances are when we start adding more and more tests, executing
-        them individually will be midly slow (even if that's a whole minute)
-        It would be nice to add a -j paramater to allow multiple threads to
-        be used and so we can execute many tests in parallel.
-
     Interface:
         Ability to select individual tests, or set parameters manually
         opposed to using the static task-template files. (A method to
         override them rather).
-
-
-Assembler:
-    Possibly support for a future assembler for QCASM.  But we're not
-    entirely sure if it makes sense.
diff --git a/ast.c b/ast.c
index 3c70a73721e49e726c1e010b3bbc0b77e94bc225..238d00a8e9455ec7e3770f8a2b1426887cff1287 100644 (file)
--- a/ast.c
+++ b/ast.c
@@ -441,6 +441,21 @@ ast_binary* ast_binary_new(lex_ctx_t ctx, int op,
     ast_instantiate(ast_binary, ctx, ast_binary_delete);
     ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binary_codegen);
 
+    if (ast_istype(right, ast_unary) && OPTS_OPTIMIZATION(OPTIM_PEEPHOLE)) {
+        ast_expression *normal = ((ast_unary*)right)->operand;
+
+        /* make a-(-b) => a + b */
+        if (op == INSTR_SUB_F) {
+            op = INSTR_ADD_F;
+            right = normal;
+            ++opts_optimizationcount[OPTIM_PEEPHOLE];
+        } else if (op == INSTR_SUB_V) {
+            op = INSTR_ADD_V;
+            right = normal;
+            ++opts_optimizationcount[OPTIM_PEEPHOLE];
+        }
+    }
+
     self->op = op;
     self->left = left;
     self->right = right;
@@ -1177,7 +1192,6 @@ ast_function* ast_function_new(lex_ctx_t ctx, const char *name, ast_value *vtype
     if (!vtype) {
         compile_error(ast_ctx(self), "internal error: ast_function_new condition 0");
         goto cleanup;
-    } else if (vtype->hasvalue || vtype->expression.vtype != TYPE_FUNCTION) {
     } else if (vtype->hasvalue || vtype->expression.vtype != TYPE_FUNCTION) {
         compile_error(ast_ctx(self), "internal error: ast_function_new condition %i %i type=%i (probably 2 bodies?)",
                  (int)!vtype,
@@ -1207,6 +1221,9 @@ ast_function* ast_function_new(lex_ctx_t ctx, const char *name, ast_value *vtype
     self->fixedparams      = NULL;
     self->return_value     = NULL;
 
+    self->static_names     = NULL;
+    self->static_count     = 0;
+
     return self;
 
 cleanup:
@@ -1228,6 +1245,9 @@ void ast_function_delete(ast_function *self)
          */
         ast_unref(self->vtype);
     }
+    for (i = 0; i < vec_size(self->static_names); ++i)
+        mem_d(self->static_names[i]);
+    vec_free(self->static_names);
     for (i = 0; i < vec_size(self->blocks); ++i)
         ast_delete(self->blocks[i]);
     vec_free(self->blocks);
diff --git a/ast.h b/ast.h
index 52858ac7f132ce14372fe7e92570593e11d2071f..26434138cb7feb1b12cffe1635596301329c4a10 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -625,6 +625,14 @@ struct ast_function_s
 
     int builtin;
 
+    /* list of used-up names for statics without the count suffix */
+    char       **static_names;
+    /* number of static variables, by convention this includes the
+     * ones without the count-suffix - remember this when dealing
+     * with savegames. uint instead of size_t as %zu in printf is
+     * C99, so no windows support. */
+    unsigned int static_count;
+
     ir_function *ir_func;
     ir_block    *curblock;
     ir_block    **breakblocks;
index 49555b895f43ebf8b4f4b1f5367b5224bea420bb..384b1fac61516a40f94b15a6b1239e565532016e 100644 (file)
@@ -1,7 +1,7 @@
 DROPBOX := dropbox_uploader.sh
 UNAME   := $(shell uname -m)
 DOWNLOAD:= ../doc/html/download.c
-BRANCH  := $(shell git branch | sed -n -e 's/^\* \(.*\)/\1/p')
+BRANCH  := $(shell git rev-parse --abbrev-ref HEAD)
 ifneq ($(shell uname -m), x86_64)
     $(error Cannot build packages without an x86_64 capable CPU)
 endif
index 758e08db38de71c1b1e9aa60ea3dc1710d7b330f..2a205bbbeef634870e788eec0abfad1aa90185b9 100644 (file)
@@ -338,6 +338,12 @@ for QuakeWorld to compile it needs to be treated as a warning
 instead, as such this warning only works when -std=qcc.
 .It Fl W Ns Cm directive-inmacro
 Warn about the use of preprocessor directives inside macros.
+.It Fl W Ns Cm builtins
+When using a function that is not explicitly defined, the compiler
+will search its intrinsics table for something that matches that
+function name by appending "__builtin_" to it. This behaviour may
+be unexpected, so enabling this will produce a diagnostic when
+such a function is resolved to a builtin.
 .El
 .Sh COMPILE FLAGS
 .Bl -tag -width Ds
diff --git a/fold.c b/fold.c
index 0128dece56cf030039463c7c0619c482a3ac455e..3d3041d9414b9ad7e75d1dafdbd90e623f571baa 100644 (file)
--- a/fold.c
+++ b/fold.c
@@ -59,9 +59,9 @@ static GMQCC_INLINE vec3_t vec3_add(vec3_t a, vec3_t b) {
 
 static GMQCC_INLINE vec3_t vec3_sub(vec3_t a, vec3_t b) {
     vec3_t out;
-    out.x = a.x + b.x;
-    out.y = a.y + b.y;
-    out.z = a.z + b.z;
+    out.x = a.x - b.x;
+    out.y = a.y - b.y;
+    out.z = a.z - b.z;
     return out;
 }
 
@@ -123,9 +123,9 @@ static GMQCC_INLINE vec3_t vec3_xorvf(vec3_t a, qcfloat_t b) {
 
 static GMQCC_INLINE vec3_t vec3_not(vec3_t a) {
     vec3_t out;
-    out.x = (qcfloat_t)(~((qcint_t)a.x));
-    out.y = (qcfloat_t)(~((qcint_t)a.y));
-    out.z = (qcfloat_t)(~((qcint_t)a.z));
+    out.x = -1-a.x;
+    out.y = -1-a.y;
+    out.z = -1-a.z;
     return out;
 }
 
@@ -160,7 +160,7 @@ static GMQCC_INLINE qcfloat_t vec3_notf(vec3_t a) {
 }
 
 static GMQCC_INLINE bool vec3_pbool(vec3_t a) {
-    return (a.x && a.y && a.z);
+    return (a.x || a.y || a.z);
 }
 
 static GMQCC_INLINE vec3_t vec3_cross(vec3_t a, vec3_t b) {
@@ -230,6 +230,7 @@ fold_t *fold_init(parser_t *parser) {
     (void)fold_constgen_float (fold,  0.0f);
     (void)fold_constgen_float (fold,  1.0f);
     (void)fold_constgen_float (fold, -1.0f);
+    (void)fold_constgen_float (fold,  2.0f);
 
     (void)fold_constgen_vector(fold, vec3_create(0.0f, 0.0f, 0.0f));
     (void)fold_constgen_vector(fold, vec3_create(-1.0f, -1.0f, -1.0f));
@@ -537,11 +538,10 @@ static GMQCC_INLINE ast_expression *fold_op_xor(fold_t *fold, ast_value *a, ast_
         if (fold_can_2(a, b))
             return fold_constgen_float(fold, (qcfloat_t)(((qcint_t)fold_immvalue_float(a)) ^ ((qcint_t)fold_immvalue_float(b))));
     } else {
-        if (isvector(b)) {
-            if (fold_can_2(a, b))
+        if (fold_can_2(a, b)) {
+            if (isvector(b))
                 return fold_constgen_vector(fold, vec3_xor(fold_immvalue_vector(a), fold_immvalue_vector(b)));
-        } else {
-            if (fold_can_2(a, b))
+            else
                 return fold_constgen_vector(fold, vec3_xorvf(fold_immvalue_vector(a), fold_immvalue_float(b)));
         }
     }
@@ -563,8 +563,10 @@ static GMQCC_INLINE ast_expression *fold_op_rshift(fold_t *fold, ast_value *a, a
 static GMQCC_INLINE ast_expression *fold_op_andor(fold_t *fold, ast_value *a, ast_value *b, float expr) {
     if (fold_can_2(a, b)) {
         if (OPTS_FLAG(PERL_LOGIC)) {
-            if (fold_immediate_true(fold, a))
-                return (ast_expression*)b;
+            if (expr)
+                return (fold_immediate_true(fold, a)) ? (ast_expression*)a : (ast_expression*)b;
+            else
+                return (fold_immediate_true(fold, a)) ? (ast_expression*)b : (ast_expression*)a;
         } else {
             return fold_constgen_float (
                 fold,
@@ -604,11 +606,15 @@ static GMQCC_INLINE ast_expression *fold_op_lteqgt(fold_t *fold, ast_value *a, a
 
 static GMQCC_INLINE ast_expression *fold_op_cmp(fold_t *fold, ast_value *a, ast_value *b, bool ne) {
     if (fold_can_2(a, b)) {
-        return fold_constgen_float(
-                    fold,
-                    (ne) ? (fold_immvalue_float(a) != fold_immvalue_float(b))
-                         : (fold_immvalue_float(a) == fold_immvalue_float(b))
-                );
+        if (isfloat(a) && isfloat(b)) {
+            float la = fold_immvalue_float(a);
+            float lb = fold_immvalue_float(b);
+            return (ast_expression*)fold->imm_float[!(ne ? la == lb : la != lb)];
+        } if (isvector(a) && isvector(b)) {
+            vec3_t la = fold_immvalue_vector(a);
+            vec3_t lb = fold_immvalue_vector(b);
+            return (ast_expression*)fold->imm_float[!(ne ? vec3_cmp(la, lb) : !vec3_cmp(la, lb))];
+        }
     }
     return NULL;
 }
@@ -616,7 +622,7 @@ static GMQCC_INLINE ast_expression *fold_op_cmp(fold_t *fold, ast_value *a, ast_
 static GMQCC_INLINE ast_expression *fold_op_bnot(fold_t *fold, ast_value *a) {
     if (isfloat(a)) {
         if (fold_can_1(a))
-            return fold_constgen_float(fold, ~((qcint_t)fold_immvalue_float(a)));
+            return fold_constgen_float(fold, -1-fold_immvalue_float(a));
     } else {
         if (isvector(a)) {
             if (fold_can_1(a))
@@ -701,46 +707,69 @@ ast_expression *fold_op(fold_t *fold, const oper_info *info, ast_expression **op
  * folding, primarly: individual functions for each intrinsics to fold,
  * and a generic selection function.
  */
+static GMQCC_INLINE ast_expression *fold_intrin_isfinite(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, isfinite(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_isinf(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, isinf(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_isnan(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, isnan(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_isnormal(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, isnormal(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_signbit(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, signbit(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intirn_acosh(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, acoshf(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_asinh(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, asinhf(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_atanh(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, atanhf(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_exp(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, expf(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_exp2(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, exp2f(fold_immvalue_float(a)));
+}
+static GMQCC_INLINE ast_expression *fold_intrin_expm1(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, expm1f(fold_immvalue_float(a)));
+}
 static GMQCC_INLINE ast_expression *fold_intrin_mod(fold_t *fold, ast_value *lhs, ast_value *rhs) {
-    return fold_constgen_float(
-                fold,
-                fmodf(
-                    fold_immvalue_float(lhs),
-                    fold_immvalue_float(rhs)
-                )
-            );
+    return fold_constgen_float(fold, fmodf(fold_immvalue_float(lhs), fold_immvalue_float(rhs)));
 }
-
 static GMQCC_INLINE ast_expression *fold_intrin_pow(fold_t *fold, ast_value *lhs, ast_value *rhs) {
-    return fold_constgen_float(
-                fold,
-                powf(
-                    fold_immvalue_float(lhs),
-                    fold_immvalue_float(rhs)
-                )
-            );
-}
-
-static GMQCC_INLINE ast_expression *fold_intrin_exp(fold_t *fold, ast_value *value) {
-    return fold_constgen_float(fold, exp(fold_immvalue_float(value)));
+    return fold_constgen_float(fold, powf(fold_immvalue_float(lhs), fold_immvalue_float(rhs)));
 }
-
-static GMQCC_INLINE ast_expression *fold_intrin_isnan(fold_t *fold, ast_value *value) {
-    return fold_constgen_float(fold, isnan(fold_immvalue_float(value)) != 0.0f);
+static GMQCC_INLINE ast_expression *fold_intrin_fabs(fold_t *fold, ast_value *a) {
+    return fold_constgen_float(fold, fabsf(fold_immvalue_float(a)));
 }
 
-static GMQCC_INLINE ast_expression *fold_intrin_fabs(fold_t *fold, ast_value *value) {
-    return fold_constgen_float(fold, fabs(fold_immvalue_float(value)));
-}
 
 ast_expression *fold_intrin(fold_t *fold, const char *intrin, ast_expression **arg) {
     ast_expression *ret = NULL;
-
-    if (!strcmp(intrin, "mod"))   ret = fold_intrin_mod  (fold, (ast_value*)arg[0], (ast_value*)arg[1]);
-    if (!strcmp(intrin, "pow"))   ret = fold_intrin_pow  (fold, (ast_value*)arg[0], (ast_value*)arg[1]);
-    if (!strcmp(intrin, "exp"))   ret = fold_intrin_exp  (fold, (ast_value*)arg[0]);
-    if (!strcmp(intrin, "isnan")) ret = fold_intrin_isnan(fold, (ast_value*)arg[0]);
-    if (!strcmp(intrin, "fabs"))  ret = fold_intrin_fabs (fold, (ast_value*)arg[0]);
+    ast_value      *a   = (ast_value*)arg[0];
+    ast_value      *b   = (ast_value*)arg[1];
+
+    if (!strcmp(intrin, "isfinite")) ret = fold_intrin_isfinite(fold, a);
+    if (!strcmp(intrin, "isinf"))    ret = fold_intrin_isinf(fold, a);
+    if (!strcmp(intrin, "isnan"))    ret = fold_intrin_isnan(fold, a);
+    if (!strcmp(intrin, "isnormal")) ret = fold_intrin_isnormal(fold, a);
+    if (!strcmp(intrin, "signbit"))  ret = fold_intrin_signbit(fold, a);
+    if (!strcmp(intrin, "acosh"))    ret = fold_intirn_acosh(fold, a);
+    if (!strcmp(intrin, "asinh"))    ret = fold_intrin_asinh(fold, a);
+    if (!strcmp(intrin, "atanh"))    ret = fold_intrin_atanh(fold, a);
+    if (!strcmp(intrin, "exp"))      ret = fold_intrin_exp(fold, a);
+    if (!strcmp(intrin, "exp2"))     ret = fold_intrin_exp2(fold, a);
+    if (!strcmp(intrin, "expm1"))    ret = fold_intrin_expm1(fold, a);
+    if (!strcmp(intrin, "mod"))      ret = fold_intrin_mod(fold, a, b);
+    if (!strcmp(intrin, "pow"))      ret = fold_intrin_pow(fold, a, b);
+    if (!strcmp(intrin, "fabs"))     ret = fold_intrin_fabs(fold, a);
 
     if (ret)
         ++opts_optimizationcount[OPTIM_CONST_FOLD];
diff --git a/ftepp.c b/ftepp.c
index a34b58c0e152d6077e669ac12d1215cfbf643389..943411eef09c7f5707a2936ae2d5c676448bb360 100644 (file)
--- a/ftepp.c
+++ b/ftepp.c
@@ -1811,11 +1811,29 @@ void ftepp_add_macro(ftepp_t *ftepp, const char *name, const char *value) {
     vec_free  (create);
 }
 
+static const char *ftepp_math_constants[][2] = {
+    { "M_E",        "2.7182818284590452354"  }, /* e          */
+    { "M_LOG2E",    "1.4426950408889634074"  }, /* log_2 e    */
+    { "M_LOG10E",   "0.43429448190325182765" }, /* log_10 e   */
+    { "M_LN2",      "0.69314718055994530942" }, /* log_e 2    */
+    { "M_LN10",     "2.30258509299404568402" }, /* log_e 10   */
+    { "M_PI",       "3.14159265358979323846" }, /* pi         */
+    { "M_PI_2",     "1.57079632679489661923" }, /* pi/2       */
+    { "M_PI_4",     "0.78539816339744830962" }, /* pi/4       */
+    { "M_1_PI",     "0.31830988618379067154" }, /* 1/pi       */
+    { "M_2_PI",     "0.63661977236758134308" }, /* 2/pi       */
+    { "M_2_SQRTPI", "1.12837916709551257390" }, /* 2/sqrt(pi) */
+    { "M_SQRT2",    "1.41421356237309504880" }, /* sqrt(2)    */
+    { "M_SQRT1_2",  "0.70710678118654752440" }, /* 1/sqrt(2)  */
+    { "M_TAU",      "6.28318530717958647692" }  /* pi*2       */
+};
+
 ftepp_t *ftepp_create()
 {
     ftepp_t *ftepp;
     char minor[32];
     char major[32];
+    size_t i;
 
     ftepp = ftepp_new();
     if (!ftepp)
@@ -1865,6 +1883,10 @@ ftepp_t *ftepp_create()
      */
     ftepp_add_macro(ftepp, "__NULL__", "nil");
 
+    /* add all the math constants */
+    for (i = 0; i < GMQCC_ARRAY_COUNT(ftepp_math_constants); i++)
+        ftepp_add_macro(ftepp, ftepp_math_constants[i][0], ftepp_math_constants[i][1]);
+
     return ftepp;
 }
 
diff --git a/gmqcc.h b/gmqcc.h
index 1285072a1790a623899b79b6d24bcc1849626539..76289da5564f874dbc14477bbdb848f3b15db53a 100644 (file)
--- a/gmqcc.h
+++ b/gmqcc.h
 #define GMQCC_HDR
 #include <stdarg.h>
 #include <stddef.h>
-#include <time.h>   /* TODO: remove?*/
-
-/*
- * Disable some over protective warnings in visual studio because fixing them is a waste
- * of my time.
- */
-#ifdef _MSC_VER
-#   pragma warning(disable : 4244 ) /* conversion from 'int' to 'float', possible loss of data */
-#endif /*! _MSC_VER */
+#include <time.h>
 
 #define GMQCC_VERSION_MAJOR 0
 #define GMQCC_VERSION_MINOR 3
 #define GMQCC_VERSION_PATCH 6
-#define GMQCC_VERSION_BUILD(J,N,P) (((J)<<16)|((N)<<8)|(P))
-#define GMQCC_VERSION \
-    GMQCC_VERSION_BUILD(GMQCC_VERSION_MAJOR, GMQCC_VERSION_MINOR, GMQCC_VERSION_PATCH)
-/* Undefine the following on a release-tag: */
-#define GMQCC_VERSION_TYPE_DEVEL
-
-/* Full version string in case we need it */
-#ifdef GMQCC_VERSION_TYPE_DEVEL
+#define GMQCC_VERSION ((GMQCC_VERSION_MAJOR<<16)|(GMQCC_VERSION_MINOR<<8)|GMQCC_VERSION_PATCH)
+
+#ifdef GMQCC_VERSION_TYPE_RELEASE
 #    ifdef GMQCC_GITINFO
 #        define GMQCC_DEV_VERSION_STRING "git build: " GMQCC_GITINFO "\n"
 #    elif defined(GMQCC_VERSION_TYPE_DEVEL)
@@ -67,117 +54,52 @@ GMQCC_IND_STRING(GMQCC_VERSION_PATCH) \
 " Built " __DATE__ " " __TIME__ \
 "\n" GMQCC_DEV_VERSION_STRING
 
-/*
- * We cannot rely on C99 at all, since compilers like MSVC
- * simply don't support it.  We define our own boolean type
- * as a result (since we cannot include <stdbool.h>). For
- * compilers that are in 1999 mode (C99 compliant) we can use
- * the language keyword _Bool which can allow for better code
- * on GCC and GCC-like compilers, opposed to `int`.
- */
 #ifndef __cplusplus
-#   ifdef  false
-#       undef  false
-#   endif /*! false */
-#   ifdef  true
-#       undef true
-#   endif /*! true  */
-#   define false (unsigned)(0)
-#   define true  (unsigned)(1)
-#   ifdef __STDC_VERSION__
-#       if __STDC_VERSION__ < 199901L && __GNUC__ < 3
-            typedef int  bool;
-#       else
-            typedef _Bool bool;
-#       endif /*! __STDC_VERSION__ < 199901L && __GNUC__ < 3 */
-#   else
-        typedef int bool;
-#   endif /*! __STDC_VERSION__ */
-#endif /*! __cplusplus      */
+#   define false (unsigned char)(0)
+#   define true  (unsigned char)(1)
+    typedef unsigned char bool;
+#endif
 
-/*
- * Of some functions which are generated we want to make sure
- * that the result isn't ignored. To find such function calls,
- * we use this macro.
- */
 #if defined(__GNUC__) || defined(__CLANG__)
-#   define GMQCC_WARN __attribute__((warn_unused_result))
-#   define GMQCC_USED __attribute__((used))
-#else
-#   define GMQCC_WARN
-#   define GMQCC_USED
-#endif /*! defined(__GNUC__) || defined (__CLANG__) */
-
-/*
- * Inline is not supported in < C90, however some compilers
- * like gcc and clang might have an inline attribute we can
- * use if present.
- */
-#ifdef __STDC_VERSION__
-#    if __STDC_VERSION__ < 199901L
-#       if defined(__GNUC__) || defined (__CLANG__)
-#           if __GNUC__ < 2
-#               define GMQCC_INLINE
-#           else
-#               define GMQCC_INLINE __attribute__ ((always_inline))
-#           endif /*! __GNUC__ < 2 */
-#       else
-#           define GMQCC_INLINE
-#       endif /*! defined(__GNUC__) || defined (__CLANG__) */
-#    else
-#       define GMQCC_INLINE inline
-#    endif /*! __STDC_VERSION < 199901L */
-/*
- * Visual studio has __forcinline we can use.  So lets use that
- * I suspect it also has just __inline of some sort, but our use
- * of inline is correct (not guessed), WE WANT IT TO BE INLINE
- */
-#elif defined(_MSC_VER)
-#    define GMQCC_INLINE __forceinline
-#else
-#    define GMQCC_INLINE
-#endif /*! __STDC_VERSION__ */
-
-/*
- * noreturn is present in GCC and clang
- * it's required for _ast_node_destory otherwise -Wmissing-noreturn
- * in clang complains about there being no return since abort() is
- * called.
- */
-#if (defined(__GNUC__) && __GNUC__ >= 2) || defined(__CLANG__)
-#    define GMQCC_NORETURN __attribute__ ((noreturn))
-#else
-#    define GMQCC_NORETURN
-#endif /*! (defined(__GNUC__) && __GNUC__ >= 2) || defined (__CLANG__) */
-
-#if (defined(__GNUC__)) || defined(__CLANG__)
+#   include <stdint.h>
+#   if (__GNUC__ >= 2) || defined(__CLANG__)
+#       define GMQCC_NORETURN    __attribute__((noreturn))
+#       define GMQCC_FORCEINLINE __attribute__((always_inline))
+#       define GMQCC_INLINE      __inline
+#   endif
 #   define GMQCC_LIKELY(X)   __builtin_expect((X), 1)
 #   define GMQCC_UNLIKELY(X) __builtin_expect((X), 0)
+#   define GMQCC_WARN        __attribute__((warn_unused_result))
+#   define GMQCC_USED        __attribute__((used))
+#   define GMQCC_RESTRICT    __restrict__
 #else
+#   ifdef _MSC_VER
+        /* conversion from 'int' to 'float', possible loss of data */
+#       pragma warning(disable : 4244)
+
+        typedef unsigned __int8  uint8_t;
+        typedef unsigned __int16 uint16_t;
+        typedef unsigned __int32 uint32_t;
+        typedef unsigned __int64 uint64_t;
+        typedef __int16          int16_t;
+        typedef __int32          int32_t;
+        typedef __int64          int64_t;
+#       define GMQCC_NORETURN    __declspec(noreturn)
+#       define GMQCC_FORCEINLINE __forceinline
+#       define GMQCC_INLINE      __inline
+#       define GMQCC_RESTRICT    __restrict
+#   else
+#       define GMQCC_NORETURN
+#       define GMQCC_FORCEINLINE
+#       define GMQCC_INLINE
+#       define GMQCC_RESTRICT
+#   endif
 #   define GMQCC_LIKELY(X)   (X)
 #   define GMQCC_UNLIKELY(X) (X)
+#   define GMQCC_WARN
+#   define GMQCC_USED
 #endif
 
-#define GMQCC_ARRAY_COUNT(X) (sizeof(X) / sizeof((X)[0]))
-
-#ifndef _MSC_VER
-#   include <stdint.h>
-#else
-    typedef unsigned __int8  uint8_t;
-    typedef unsigned __int16 uint16_t;
-    typedef unsigned __int32 uint32_t;
-    typedef unsigned __int64 uint64_t;
-
-    typedef __int16          int16_t;
-    typedef __int32          int32_t;
-    typedef __int64          int64_t;
-#endif /*! _MSC_VER */
-
-/*
- * Very roboust way at determining endianess at compile time: this handles
- * almost every possible situation.  Otherwise a runtime check has to be
- * performed.
- */
 #define GMQCC_BYTE_ORDER_LITTLE 1234
 #define GMQCC_BYTE_ORDER_BIG    4321
 
@@ -251,7 +173,9 @@ GMQCC_IND_STRING(GMQCC_VERSION_PATCH) \
 #   else
 #       define PLATFORM_BYTE_ORDER -1
 #   endif
-#endif /*! !defined (PLATFORM_BYTE_ORDER) */
+#endif
+
+#define GMQCC_ARRAY_COUNT(X) (sizeof(X) / sizeof((X)[0]))
 
 /* stat.c */
 void  stat_info          (void);
@@ -1041,15 +965,17 @@ typedef struct {
 extern opts_cmd_t opts;
 
 #define OPTS_GENERIC(f,i)    (!! (((f)[(i)/32]) & (1<< (unsigned)((i)%32))))
+
 #define OPTS_FLAG(i)         OPTS_GENERIC(opts.flags,        (i))
 #define OPTS_WARN(i)         OPTS_GENERIC(opts.warn,         (i))
 #define OPTS_WERROR(i)       OPTS_GENERIC(opts.werror,       (i))
 #define OPTS_OPTIMIZATION(i) OPTS_GENERIC(opts.optimization, (i))
+
 #define OPTS_OPTION_DUPED(X) (opts.options[X].allocated)
-#define OPTS_OPTION_BOOL(X) (opts.options[X].data.b)
-#define OPTS_OPTION_U16(X)  (opts.options[X].data.u16)
-#define OPTS_OPTION_U32(X)  (opts.options[X].data.u32)
-#define OPTS_OPTION_DUP(X) *(OPTS_OPTION_DUPED(X)=true, &(opts.options[X].data.str.p))
-#define OPTS_OPTION_STR(X)  (opts.options[X].data.str.c)
+#define OPTS_OPTION_BOOL(X)  (opts.options[X].data.b)
+#define OPTS_OPTION_U16(X)   (opts.options[X].data.u16)
+#define OPTS_OPTION_U32(X)   (opts.options[X].data.u32)
+#define OPTS_OPTION_STR(X)   (opts.options[X].data.str.c)
+#define OPTS_OPTION_DUP(X)  *(OPTS_OPTION_DUPED(X)=true, &(opts.options[X].data.str.p))
 
 #endif /*! GMQCC_HDR */
index acff3b3daaecadc5868f60b1363d71b4c5f8040d..0a263df6da6631aeabfb159884ee30c3eb2bd093 100644 (file)
     DIRECTIVE_INMACRO = true
 
 
+    #When using a function that is not explicitly defined, the compiler
+    #will search its intrinsics table for something that matches that
+    #function name by appending "__builtin_" to it. This behaviour may
+    #be unexpected, so enabling this will produce a diagnostic when
+    #such a function is resolved to a builtin.
+
+    BUILTINS = true
+
 
 [optimizations]
     #Some general peephole optimizations. For instance the code `a = b
index 20d82c6585e51e9c89e5acbed05d859996f3a1e2..4df403b82dfdd0bef92f3095ce7c8e21afcdfbe1 100644 (file)
--- a/intrin.c
+++ b/intrin.c
@@ -58,319 +58,1875 @@ static GMQCC_INLINE void intrin_reg(intrin_t *intrin, ast_value *const value, as
     vec_push(intrin->parser->globals,   (ast_expression*)value);
 }
 
-#define QC_M_E 2.71828182845905f
+#define QC_POW_EPSILON 0.00001f
+
+/*
+ * since some intrinsics depend on each other there is the possibility
+ * that an intrinsic will fail to get a 'depended' function that a
+ * builtin needs, causing some dependency in the chain to have a NULL
+ * function. This will cause a segmentation fault at code generation,
+ * even though an error was raised. To contiue to allow it (instead
+ * of stopping compilation right away). We need to return from the
+ * parser, before compilation stops after all the collected errors.
+ */
+static ast_expression *intrin_func_self(intrin_t *intrin, const char *name, const char *from);
+static ast_expression *intrin_nullfunc(intrin_t *intrin) {
+    ast_value    *value = NULL;
+    ast_function *func  = intrin_value(intrin, &value, NULL, TYPE_VOID);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_isfinite(intrin_t *intrin) {
+    /*
+     * float isfinite(float x) {
+     *     return !(isnan(x) || isinf(x));
+     * }
+     */
+    ast_value    *value     = NULL;
+    ast_value    *x         = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_function *func      = intrin_value(intrin, &value, "isfinite", TYPE_FLOAT);
+    ast_call     *callisnan = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "isnan", "isfinite"));
+    ast_call     *callisinf = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "isinf", "isfinite"));
+    ast_block    *block     = ast_block_new(intrin_ctx(intrin));
+
+    /* float x; */
+    vec_push(value->expression.params, x);
+
+    /* <callisnan> = isnan(x); */
+    vec_push(callisnan->params, (ast_expression*)x);
+
+    /* <callisinf> = isinf(x); */
+    vec_push(callisinf->params, (ast_expression*)x);
+
+    /* return (!<callisnan> || <callisinf>); */
+    vec_push(block->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_unary_new(
+                intrin_ctx(intrin),
+                INSTR_NOT_F,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_OR,
+                    (ast_expression*)callisnan,
+                    (ast_expression*)callisinf
+                )
+            )
+        )
+    );
+
+    vec_push(func->blocks, block);
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;;
+}
+
+static ast_expression *intrin_isinf(intrin_t *intrin) {
+    /*
+     * float isinf(float x) {
+     *     return (x != 0.0) && (x + x == x);
+     * }
+     */
+    ast_value    *value = NULL;
+    ast_value    *x     = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
+    ast_function *func  = intrin_value(intrin, &value, "isinf", TYPE_FLOAT);
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_AND,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_NE_F,
+                    (ast_expression*)x,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                ),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_EQ_F,
+                    (ast_expression*)ast_binary_new(
+                        intrin_ctx(intrin),
+                        INSTR_ADD_F,
+                        (ast_expression*)x,
+                        (ast_expression*)x
+                    ),
+                    (ast_expression*)x
+                )
+            )
+        )
+    );
+
+    vec_push(value->expression.params, x);
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_isnan(intrin_t *intrin) {
+    /*
+     * float isnan(float x) {
+     *   float local;
+     *   local = x;
+     *
+     *   return (x != local);
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *arg1   = ast_value_new(intrin_ctx(intrin), "x",     TYPE_FLOAT);
+    ast_value    *local  = ast_value_new(intrin_ctx(intrin), "local", TYPE_FLOAT);
+    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
+    ast_function *func   = intrin_value(intrin, &value, "isnan", TYPE_FLOAT);
+
+    vec_push(body->locals, local);
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)local,
+            (ast_expression*)arg1
+        )
+    );
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_NE_F,
+                (ast_expression*)arg1,
+                (ast_expression*)local
+            )
+        )
+    );
+
+    vec_push(value->expression.params, arg1);
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_isnormal(intrin_t *intrin) {
+    /*
+     * float isnormal(float x) {
+     *     return isfinite(x);
+     * }
+     */
+    ast_value    *value         = NULL;
+    ast_call     *callisfinite  = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "isfinite", "isnormal"));
+    ast_value    *x             = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body          = ast_block_new(intrin_ctx(intrin));
+    ast_function *func          = intrin_value(intrin, &value, "isnormal", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+    vec_push(callisfinite->params, (ast_expression*)x);
+
+    /* return <callisfinite> */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)callisfinite
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_signbit(intrin_t *intrin) {
+    /*
+     * float signbit(float x) {
+     *     return (x < 0);
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *x      = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
+    ast_function *func   = intrin_value(intrin, &value, "signbit", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+
+    /* return (x < 0); */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_ternary_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LT,
+                    (ast_expression*)x,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                ),
+                (ast_expression*)intrin->fold->imm_float[1],
+                (ast_expression*)intrin->fold->imm_float[0]
+            )
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_acosh(intrin_t *intrin) {
+    /*
+     * float acosh(float x) {
+     *     return log(x + sqrt((x * x) - 1));
+     * }
+     */
+    ast_value    *value    = NULL;
+    ast_value    *x        = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_call     *calllog  = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "log", "acosh"));
+    ast_call     *callsqrt = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "acosh"));
+    ast_block    *body     = ast_block_new(intrin_ctx(intrin));
+    ast_function *func     = intrin_value(intrin, &value, "acosh", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+
+    /* <callsqrt> = sqrt((x * x) - 1); */
+    vec_push(callsqrt->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_SUB_F,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_MUL_F,
+                (ast_expression*)x,
+                (ast_expression*)x
+            ),
+            (ast_expression*)intrin->fold->imm_float[1]
+        )
+    );
+
+    /* <calllog> = log(x + <callsqrt>); */
+    vec_push(calllog->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_ADD_F,
+            (ast_expression*)x,
+            (ast_expression*)callsqrt
+        )
+    );
+
+    /* return <calllog>; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)calllog
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_asinh(intrin_t *intrin) {
+    /*
+     * float asinh(float x) {
+     *     return log(x + sqrt((x * x) + 1));
+     * }
+     */
+    ast_value    *value    = NULL;
+    ast_value    *x        = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_call     *calllog  = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "log", "asinh"));
+    ast_call     *callsqrt = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "asinh"));
+    ast_block    *body     = ast_block_new(intrin_ctx(intrin));
+    ast_function *func     = intrin_value(intrin, &value, "asinh", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+
+    /* <callsqrt> = sqrt((x * x) + 1); */
+    vec_push(callsqrt->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_ADD_F,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_MUL_F,
+                (ast_expression*)x,
+                (ast_expression*)x
+            ),
+            (ast_expression*)intrin->fold->imm_float[1]
+        )
+    );
+
+    /* <calllog> = log(x + <callsqrt>); */
+    vec_push(calllog->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_ADD_F,
+            (ast_expression*)x,
+            (ast_expression*)callsqrt
+        )
+    );
+
+    /* return <calllog>; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)calllog
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_atanh(intrin_t *intrin) {
+    /*
+     * float atanh(float x) {
+     *     return 0.5 * log((1 + x) / (1 - x))
+     * }
+     */
+    ast_value    *value   = NULL;
+    ast_value    *x       = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_call     *calllog = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "log", "atanh"));
+    ast_block    *body    = ast_block_new(intrin_ctx(intrin));
+    ast_function *func    = intrin_value(intrin, &value, "atanh", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+
+    /* <callog> = log((1 + x) / (1 - x)); */
+    vec_push(calllog->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_DIV_F,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_ADD_F,
+                (ast_expression*)intrin->fold->imm_float[1],
+                (ast_expression*)x
+            ),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_SUB_F,
+                (ast_expression*)intrin->fold->imm_float[1],
+                (ast_expression*)x
+            )
+        )
+    );
+
+    /* return 0.5 * <calllog>; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_MUL_F,
+            (ast_expression*)fold_constgen_float(intrin->fold, 0.5),
+            (ast_expression*)calllog
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_exp(intrin_t *intrin) {
+    /*
+     * float exp(float x) {
+     *     float sum = 1.0;
+     *     float acc = 1.0;
+     *     float i;
+     *     for (i = 1; i < 200; ++i)
+     *         sum += (acc *= x / i);
+     *
+     *     return sum;
+     * }
+     */
+    ast_value    *value = NULL;
+    ast_value    *x     = ast_value_new(intrin_ctx(intrin), "x",   TYPE_FLOAT);
+    ast_value    *sum   = ast_value_new(intrin_ctx(intrin), "sum", TYPE_FLOAT);
+    ast_value    *acc   = ast_value_new(intrin_ctx(intrin), "acc", TYPE_FLOAT);
+    ast_value    *i     = ast_value_new(intrin_ctx(intrin), "i",   TYPE_FLOAT);
+    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
+    ast_function *func  = intrin_value(intrin, &value, "exp", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+    vec_push(body->locals, sum);
+    vec_push(body->locals, acc);
+    vec_push(body->locals, i);
+
+    /* sum = 1.0; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)sum,
+            (ast_expression*)intrin->fold->imm_float[1]
+        )
+    );
+
+    /* acc = 1.0; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)acc,
+            (ast_expression*)intrin->fold->imm_float[1]
+        )
+    );
+
+    /*
+     * for (i = 1; i < 200; ++i)
+     *     sum += (acc *= x / i);
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_loop_new(
+            intrin_ctx(intrin),
+            /* i = 1; */
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)i,
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            /* i < 200; */
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_LT,
+                (ast_expression*)i,
+                (ast_expression*)fold_constgen_float(intrin->fold, 200.0f)
+            ),
+            false,
+            NULL,
+            false,
+            /* ++i; */
+            (ast_expression*)ast_binstore_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                INSTR_ADD_F,
+                (ast_expression*)i,
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            /* sum += (acc *= (x / i)) */
+            (ast_expression*)ast_binstore_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                INSTR_ADD_F,
+                (ast_expression*)sum,
+                (ast_expression*)ast_binstore_new(
+                    intrin_ctx(intrin),
+                    INSTR_STORE_F,
+                    INSTR_MUL_F,
+                    (ast_expression*)acc,
+                    (ast_expression*)ast_binary_new(
+                        intrin_ctx(intrin),
+                        INSTR_DIV_F,
+                        (ast_expression*)x,
+                        (ast_expression*)i
+                    )
+                )
+            )
+        )
+    );
+
+    /* return sum; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)sum
+        )
+    );
+
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_exp2(intrin_t *intrin) {
+    /*
+     * float exp2(float x) {
+     *     return pow(2, x);
+     * }
+     */
+    ast_value    *value     = NULL;
+    ast_call     *callpow   = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "pow", "exp2"));
+    ast_value    *arg1      = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body      = ast_block_new(intrin_ctx(intrin));
+    ast_function *func      = intrin_value(intrin, &value, "exp2", TYPE_FLOAT);
+
+    vec_push(value->expression.params, arg1);
+
+    vec_push(callpow->params, (ast_expression*)intrin->fold->imm_float[3]);
+    vec_push(callpow->params, (ast_expression*)arg1);
+
+    /* return <callpow> */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)callpow
+        )
+    );
+
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_expm1(intrin_t *intrin) {
+    /*
+     * float expm1(float x) {
+     *     return exp(x) - 1;
+     * }
+     */
+    ast_value    *value    = NULL;
+    ast_call     *callexp  = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "exp", "expm1"));
+    ast_value    *x        = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body     = ast_block_new(intrin_ctx(intrin));
+    ast_function *func     = intrin_value(intrin, &value, "expm1", TYPE_FLOAT);
+
+    vec_push(value->expression.params, x);
+
+    /* <callexp> = exp(x); */
+    vec_push(callexp->params, (ast_expression*)x);
+
+    /* return <callexp> - 1; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_SUB_F,
+                (ast_expression*)callexp,
+                (ast_expression*)intrin->fold->imm_float[1]
+            )
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_pow(intrin_t *intrin) {
+    /*
+     *
+     * float pow(float base, float exp) {
+     *     float result;
+     *     float low;
+     *     float high;
+     *     float mid;
+     *     float square;
+     *     float accumulate;
+     *
+     *     if (exp == 0.0)
+     *         return 1;
+     *     if (exp == 1.0)
+     *         return base;
+     *     if (exp < 0)
+     *         return 1.0 / pow(base, -exp);
+     *     if (exp >= 1) {
+     *         result = pow(base, exp / 2);
+     *         return result * result;
+     *     }
+     *
+     *     low        = 0.0f;
+     *     high       = 1.0f;
+     *     square     = sqrt(base);
+     *     accumulate = square;
+     *     mid        = high / 2.0f
+     *
+     *     while (fabs(mid - exp) > QC_POW_EPSILON) {
+     *         square = sqrt(square);
+     *         if (mid < exp) {
+     *             low         = mid;
+     *             accumulate *= square;
+     *         } else {
+     *             high        = mid;
+     *             accumulate *= (1.0f / square);
+     *         }
+     *         mid = (low + high) / 2;
+     *     }
+     *     return accumulate;
+     * }
+     */
+    ast_value    *value = NULL;
+    ast_function *func = intrin_value(intrin, &value, "pow", TYPE_FLOAT);
+
+    /* prepare some calls for later */
+    ast_call *callpow1  = ast_call_new(intrin_ctx(intrin), (ast_expression*)value);                  /* for pow(base, -exp)    */
+    ast_call *callpow2  = ast_call_new(intrin_ctx(intrin), (ast_expression*)value);                  /* for pow(vase, exp / 2) */
+    ast_call *callsqrt1 = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "pow")); /* for sqrt(base)         */
+    ast_call *callsqrt2 = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "sqrt", "pow")); /* for sqrt(square)       */
+    ast_call *callfabs  = ast_call_new(intrin_ctx(intrin), intrin_func_self(intrin, "fabs", "pow")); /* for fabs(mid - exp)    */
+
+    /* prepare some blocks for later */
+    ast_block *expgt1       = ast_block_new(intrin_ctx(intrin));
+    ast_block *midltexp     = ast_block_new(intrin_ctx(intrin));
+    ast_block *midltexpelse = ast_block_new(intrin_ctx(intrin));
+    ast_block *whileblock   = ast_block_new(intrin_ctx(intrin));
+
+    /* float pow(float base, float exp) */
+    ast_value    *base = ast_value_new(intrin_ctx(intrin), "base", TYPE_FLOAT);
+    ast_value    *exp  = ast_value_new(intrin_ctx(intrin), "exp",  TYPE_FLOAT);
+    /* { */
+    ast_block    *body = ast_block_new(intrin_ctx(intrin));
+
+    /*
+     * float result;
+     * float low;
+     * float high;
+     * float square;
+     * float accumulate;
+     * float mid;
+     */
+    ast_value *result     = ast_value_new(intrin_ctx(intrin), "result",     TYPE_FLOAT);
+    ast_value *low        = ast_value_new(intrin_ctx(intrin), "low",        TYPE_FLOAT);
+    ast_value *high       = ast_value_new(intrin_ctx(intrin), "high",       TYPE_FLOAT);
+    ast_value *square     = ast_value_new(intrin_ctx(intrin), "square",     TYPE_FLOAT);
+    ast_value *accumulate = ast_value_new(intrin_ctx(intrin), "accumulate", TYPE_FLOAT);
+    ast_value *mid        = ast_value_new(intrin_ctx(intrin), "mid",        TYPE_FLOAT);
+    vec_push(body->locals, result);
+    vec_push(body->locals, low);
+    vec_push(body->locals, high);
+    vec_push(body->locals, square);
+    vec_push(body->locals, accumulate);
+    vec_push(body->locals, mid);
+
+    vec_push(value->expression.params, base);
+    vec_push(value->expression.params, exp);
+
+    /*
+     * if (exp == 0.0)
+     *     return 1;
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_ifthen_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_EQ_F,
+                (ast_expression*)exp,
+                (ast_expression*)intrin->fold->imm_float[0]
+            ),
+            (ast_expression*)ast_return_new(
+                intrin_ctx(intrin),
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            NULL
+        )
+    );
+
+    /*
+     * if (exp == 1.0)
+     *     return base;
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_ifthen_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_EQ_F,
+                (ast_expression*)exp,
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            (ast_expression*)ast_return_new(
+                intrin_ctx(intrin),
+                (ast_expression*)base
+            ),
+            NULL
+        )
+    );
+
+    /* <callpow1> = pow(base, -exp) */
+    vec_push(callpow1->params, (ast_expression*)base);
+    vec_push(callpow1->params,
+        (ast_expression*)ast_unary_new(
+            intrin_ctx(intrin),
+            VINSTR_NEG_F,
+            (ast_expression*)exp
+        )
+    );
+
+    /*
+     * if (exp < 0)
+     *     return 1.0 / <callpow1>;
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_ifthen_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_LT,
+                (ast_expression*)exp,
+                (ast_expression*)intrin->fold->imm_float[0]
+            ),
+            (ast_expression*)ast_return_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_DIV_F,
+                    (ast_expression*)intrin->fold->imm_float[1],
+                    (ast_expression*)callpow1
+                )
+            ),
+            NULL
+        )
+    );
+
+    /* <callpow2> = pow(base, exp / 2) */
+    vec_push(callpow2->params, (ast_expression*)base);
+    vec_push(callpow2->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_DIV_F,
+            (ast_expression*)exp,
+            (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+        )
+    );
+
+    /*
+     * <expgt1> = {
+     *     result = <callpow2>;
+     *     return result * result;
+     * }
+     */
+    vec_push(expgt1->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)result,
+            (ast_expression*)callpow2
+        )
+    );
+    vec_push(expgt1->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_MUL_F,
+                (ast_expression*)result,
+                (ast_expression*)result
+            )
+        )
+    );
+
+    /*
+     * if (exp >= 1) {
+     *     <expgt1>
+     * }
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_ifthen_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_GE,
+                (ast_expression*)exp,
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            (ast_expression*)expgt1,
+            NULL
+        )
+    );
+
+    /*
+     * <callsqrt1> = sqrt(base)
+     */
+    vec_push(callsqrt1->params, (ast_expression*)base);
+
+    /*
+     * low        = 0.0f;
+     * high       = 1.0f;
+     * square     = sqrt(base);
+     * accumulate = square;
+     * mid        = high / 2.0f;
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)low,
+            (ast_expression*)intrin->fold->imm_float[0]
+        )
+    );
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)high,
+            (ast_expression*)intrin->fold->imm_float[1]
+        )
+    );
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)square,
+            (ast_expression*)callsqrt1
+        )
+    );
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)accumulate,
+            (ast_expression*)square
+        )
+    );
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)mid,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)high,
+                (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+            )
+        )
+    );
+
+    /*
+     * <midltexp> = {
+     *     low         = mid;
+     *     accumulate *= square;
+     * }
+     */
+    vec_push(midltexp->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)low,
+            (ast_expression*)mid
+        )
+    );
+    vec_push(midltexp->exprs,
+        (ast_expression*)ast_binstore_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            INSTR_MUL_F,
+            (ast_expression*)accumulate,
+            (ast_expression*)square
+        )
+    );
+
+    /*
+     * <midltexpelse> = {
+     *     high        = mid;
+     *     accumulate *= (1.0 / square);
+     * }
+     */
+    vec_push(midltexpelse->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)high,
+            (ast_expression*)mid
+        )
+    );
+    vec_push(midltexpelse->exprs,
+        (ast_expression*)ast_binstore_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            INSTR_MUL_F,
+            (ast_expression*)accumulate,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)intrin->fold->imm_float[1],
+                (ast_expression*)square
+            )
+        )
+    );
 
-static ast_expression *intrin_pow (intrin_t *intrin) {
     /*
-     * float pow(float x, float y) {
-     *   float local = 1.0f;
-     *   while (y > 0) {
-     *     while (!(y & 1)) {
-     *       y >>= 2;
-     *       x *=  x;
-     *     }
-     *     y--;
-     *     local *= x;
+     * <callsqrt2> = sqrt(square)
+     */
+    vec_push(callsqrt2->params, (ast_expression*)square);
+
+    /*
+     * <whileblock> = {
+     *     square = <callsqrt2>;
+     *     if (mid < exp)
+     *          <midltexp>;
+     *     else
+     *          <midltexpelse>;
+     *
+     *     mid = (low + high) / 2;
+     * }
+     */
+    vec_push(whileblock->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)square,
+            (ast_expression*)callsqrt2
+        )
+    );
+    vec_push(whileblock->exprs,
+        (ast_expression*)ast_ifthen_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_LT,
+                (ast_expression*)mid,
+                (ast_expression*)exp
+            ),
+            (ast_expression*)midltexp,
+            (ast_expression*)midltexpelse
+        )
+    );
+    vec_push(whileblock->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)mid,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_ADD_F,
+                    (ast_expression*)low,
+                    (ast_expression*)high
+                ),
+                (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+            )
+        )
+    );
+
+    /*
+     * <callabs> = fabs(mid - exp)
+     */
+    vec_push(callfabs->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_SUB_F,
+            (ast_expression*)mid,
+            (ast_expression*)exp
+        )
+    );
+
+    /*
+     * while (<callfabs>  > epsilon)
+     *     <whileblock>
+     */
+    vec_push(body->exprs,
+        (ast_expression*)ast_loop_new(
+            intrin_ctx(intrin),
+            /* init */
+            NULL,
+            /* pre condition */
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_GT,
+                (ast_expression*)callfabs,
+                (ast_expression*)fold_constgen_float(intrin->fold, QC_POW_EPSILON)
+            ),
+            /* pre not */
+            false,
+            /* post condition */
+            NULL,
+            /* post not */
+            false,
+            /* increment expression */
+            NULL,
+            /* code block */
+            (ast_expression*)whileblock
+        )
+    );
+
+    /* return accumulate */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)accumulate
+        )
+    );
+
+    /* } */
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_mod(intrin_t *intrin) {
+    /*
+     * float mod(float a, float b) {
+     *     float div = a / b;
+     *     float sign = (div < 0.0f) ? -1 : 1;
+     *     return a - b * sign * floor(sign * div);
+     * }
+     */
+    ast_value    *value = NULL;
+    ast_call     *call  = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "floor", "mod"));
+    ast_value    *a     = ast_value_new(intrin_ctx(intrin), "a",    TYPE_FLOAT);
+    ast_value    *b     = ast_value_new(intrin_ctx(intrin), "b",    TYPE_FLOAT);
+    ast_value    *div   = ast_value_new(intrin_ctx(intrin), "div",  TYPE_FLOAT);
+    ast_value    *sign  = ast_value_new(intrin_ctx(intrin), "sign", TYPE_FLOAT);
+    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
+    ast_function *func  = intrin_value(intrin, &value, "mod", TYPE_FLOAT);
+
+    vec_push(value->expression.params, a);
+    vec_push(value->expression.params, b);
+
+    vec_push(body->locals, div);
+    vec_push(body->locals, sign);
+
+    /* div = a / b; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)div,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)a,
+                (ast_expression*)b
+            )
+        )
+    );
+
+    /* sign = (div < 0.0f) ? -1 : 1; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)sign,
+            (ast_expression*)ast_ternary_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LT,
+                    (ast_expression*)div,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                ),
+                (ast_expression*)intrin->fold->imm_float[2],
+                (ast_expression*)intrin->fold->imm_float[1]
+            )
+        )
+    );
+
+    /* floor(sign * div) */
+    vec_push(call->params,
+        (ast_expression*)ast_binary_new(
+            intrin_ctx(intrin),
+            INSTR_MUL_F,
+            (ast_expression*)sign,
+            (ast_expression*)div
+        )
+    );
+
+    /* return a - b * sign * <call> */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_SUB_F,
+                (ast_expression*)a,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_MUL_F,
+                    (ast_expression*)b,
+                    (ast_expression*)ast_binary_new(
+                        intrin_ctx(intrin),
+                        INSTR_MUL_F,
+                        (ast_expression*)sign,
+                        (ast_expression*)call
+                    )
+                )
+            )
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_fabs(intrin_t *intrin) {
+    /*
+     * float fabs(float x) {
+     *     return x < 0 ? -x : x;
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *arg1   = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
+    ast_function *func   = intrin_value(intrin, &value, "fabs", TYPE_FLOAT);
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_ternary_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LE,
+                    (ast_expression*)arg1,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                ),
+                (ast_expression*)ast_unary_new(
+                    intrin_ctx(intrin),
+                    VINSTR_NEG_F,
+                    (ast_expression*)arg1
+                ),
+                (ast_expression*)arg1
+            )
+        )
+    );
+
+    vec_push(value->expression.params, arg1);
+    vec_push(func->blocks, body);
+
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_epsilon(intrin_t *intrin) {
+    /*
+     * float epsilon(void) {
+     *     float eps = 1.0f;
+     *     do { eps /= 2.0f; } while ((1.0f + (eps / 2.0f)) != 1.0f);
+     *     return eps;
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *eps    = ast_value_new(intrin_ctx(intrin), "eps", TYPE_FLOAT);
+    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
+    ast_function *func   = intrin_value(intrin, &value, "epsilon", TYPE_FLOAT);
+
+    vec_push(body->locals, eps);
+
+    /* eps = 1.0f; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)eps,
+            (ast_expression*)intrin->fold->imm_float[0]
+        )
+    );
+
+    vec_push(body->exprs,
+        (ast_expression*)ast_loop_new(
+            intrin_ctx(intrin),
+            NULL,
+            NULL,
+            false,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_NE_F,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_ADD_F,
+                    (ast_expression*)intrin->fold->imm_float[1],
+                    (ast_expression*)ast_binary_new(
+                        intrin_ctx(intrin),
+                        INSTR_MUL_F,
+                        (ast_expression*)eps,
+                        (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+                    )
+                ),
+                (ast_expression*)intrin->fold->imm_float[1]
+            ),
+            false,
+            NULL,
+            (ast_expression*)ast_binstore_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                INSTR_DIV_F,
+                (ast_expression*)eps,
+                (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+            )
+        )
+    );
+
+    /* return eps; */
+    vec_push(body->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)eps
+        )
+    );
+
+    vec_push(func->blocks, body);
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_nan(intrin_t *intrin) {
+    /*
+     * float nan(void) {
+     *     float x = 0.0f;
+     *     return x / x;
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *x      = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_function *func   = intrin_value(intrin, &value, "nan", TYPE_FLOAT);
+    ast_block    *block  = ast_block_new(intrin_ctx(intrin));
+
+    vec_push(block->locals, x);
+
+    vec_push(block->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)x,
+            (ast_expression*)intrin->fold->imm_float[0]
+        )
+    );
+
+    vec_push(block->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)x,
+                (ast_expression*)x
+            )
+        )
+    );
+
+    vec_push(func->blocks, block);
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_inf(intrin_t *intrin) {
+    /*
+     * float inf(void) {
+     *     float x = 1.0f;
+     *     float y = 0.0f;
+     *     return x / y;
+     * }
+     */
+    ast_value    *value  = NULL;
+    ast_value    *x      = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
+    ast_value    *y      = ast_value_new(intrin_ctx(intrin), "y", TYPE_FLOAT);
+    ast_function *func   = intrin_value(intrin, &value, "inf", TYPE_FLOAT);
+    ast_block    *block  = ast_block_new(intrin_ctx(intrin));
+    size_t        i;
+
+    vec_push(block->locals, x);
+    vec_push(block->locals, y);
+
+    /* to keep code size down */
+    for (i = 0; i <= 1; i++) {
+        vec_push(block->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i == 0) ? x : y),
+                (ast_expression*)intrin->fold->imm_float[i]
+            )
+        );
+    }
+
+    vec_push(block->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_DIV_F,
+                (ast_expression*)x,
+                (ast_expression*)y
+            )
+        )
+    );
+
+    vec_push(func->blocks, block);
+    intrin_reg(intrin, value, func);
+
+    return (ast_expression*)value;
+}
+
+static ast_expression *intrin_ln(intrin_t *intrin) {
+    /*
+     * float log(float power, float base) {
+     *   float whole;
+     *   float nth
+     *   float sign = 1.0f;
+     *   float eps  = epsilon();
+     *
+     *   if (power <= 1.0f || bbase <= 1.0) {
+     *       if (power <= 0.0f || base <= 0.0f)
+     *           return nan();
+     *
+     *       if (power < 1.0f) {
+     *           power = 1.0f / power;
+     *           sign *= -1.0f;
+     *       }
+     *
+     *       if (base < 1.0f) {
+     *           sign *= -1.0f;
+     *           base  = 1.0f / base;
+     *       }
+     *   }
+     *
+     *   float A_i       = 1;
+     *   float B_i       = 0;
+     *   float A_iminus1 = 0;
+     *   float B_iminus1 = 1;
+     *
+     *   for (;;) {
+     *       whole = power;
+     *       nth   = 0.0f;
+     *
+     *       while (whole >= base) {
+     *           float base2    = base;
+     *           float n2       = 1.0f;
+     *           float newbase2 = base2 * base2;
+     *
+     *           while (whole >= newbase2) {
+     *               base2     = newbase2;
+     *               n2       *= 2;
+     *               newbase2 *= newbase2;
+     *           }
+     *
+     *           whole /= base2;
+     *           nth += n2;
+     *       }
+     *
+     *       float b_iplus1 = n;
+     *       float A_iplus1 = b_iplus1 * A_i + A_iminus1;
+     *       float B_iplus1 = b_iplus1 * B_i + B_iminus1;
+     *
+     *       A_iminus1 = A_i;
+     *       B_iminus1 = B_i;
+     *       A_i       = A_iplus1;
+     *       B_i       = B_iplus1;
+     *
+     *       if (whole <= 1.0f + eps)
+     *           break;
+     *
+     *       power = base;
+     *       bower = whole;
      *   }
-     *   return local;
+     *   return sign * A_i / B_i;
      * }
      */
-    ast_value    *value = NULL;
-    ast_value    *arg1  = ast_value_new(intrin_ctx(intrin), "x",     TYPE_FLOAT);
-    ast_value    *arg2  = ast_value_new(intrin_ctx(intrin), "y",     TYPE_FLOAT);
-    ast_value    *local = ast_value_new(intrin_ctx(intrin), "local", TYPE_FLOAT);
-    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
-    ast_block    *l1b   = ast_block_new(intrin_ctx(intrin)); /* loop 1 body */
-    ast_block    *l2b   = ast_block_new(intrin_ctx(intrin)); /* loop 2 body */
-    ast_loop     *loop1 = NULL;
-    ast_loop     *loop2 = NULL;
-    ast_function *func  = intrin_value(intrin, &value, "pow", TYPE_FLOAT);
 
-    /* arguments */
-    vec_push(value->expression.params, arg1);
-    vec_push(value->expression.params, arg2);
+    ast_value    *value      = NULL;
+    ast_value    *power      = ast_value_new(intrin_ctx(intrin), "power",     TYPE_FLOAT);
+    ast_value    *base       = ast_value_new(intrin_ctx(intrin), "base",      TYPE_FLOAT);
+    ast_value    *whole      = ast_value_new(intrin_ctx(intrin), "whole",     TYPE_FLOAT);
+    ast_value    *nth        = ast_value_new(intrin_ctx(intrin), "nth",       TYPE_FLOAT);
+    ast_value    *sign       = ast_value_new(intrin_ctx(intrin), "sign",      TYPE_FLOAT);
+    ast_value    *A_i        = ast_value_new(intrin_ctx(intrin), "A_i",       TYPE_FLOAT);
+    ast_value    *B_i        = ast_value_new(intrin_ctx(intrin), "B_i",       TYPE_FLOAT);
+    ast_value    *A_iminus1  = ast_value_new(intrin_ctx(intrin), "A_iminus1", TYPE_FLOAT);
+    ast_value    *B_iminus1  = ast_value_new(intrin_ctx(intrin), "B_iminus1", TYPE_FLOAT);
+    ast_value    *b_iplus1   = ast_value_new(intrin_ctx(intrin), "b_iplus1",  TYPE_FLOAT);
+    ast_value    *A_iplus1   = ast_value_new(intrin_ctx(intrin), "A_iplus1",  TYPE_FLOAT);
+    ast_value    *B_iplus1   = ast_value_new(intrin_ctx(intrin), "B_iplus1",  TYPE_FLOAT);
+    ast_value    *eps        = ast_value_new(intrin_ctx(intrin), "eps",       TYPE_FLOAT);
+    ast_value    *base2      = ast_value_new(intrin_ctx(intrin), "base2",     TYPE_FLOAT);
+    ast_value    *n2         = ast_value_new(intrin_ctx(intrin), "n2",        TYPE_FLOAT);
+    ast_value    *newbase2   = ast_value_new(intrin_ctx(intrin), "newbase2",  TYPE_FLOAT);
+    ast_block    *block      = ast_block_new(intrin_ctx(intrin));
+    ast_block    *plt1orblt1 = ast_block_new(intrin_ctx(intrin)); /* (power <= 1.0f || base <= 1.0f) */
+    ast_block    *plt1       = ast_block_new(intrin_ctx(intrin)); /* (power < 1.0f) */
+    ast_block    *blt1       = ast_block_new(intrin_ctx(intrin)); /* (base  < 1.0f) */
+    ast_block    *forloop    = ast_block_new(intrin_ctx(intrin)); /* for(;;) */
+    ast_block    *whileloop  = ast_block_new(intrin_ctx(intrin)); /* while (whole >= base) */
+    ast_block    *nestwhile  = ast_block_new(intrin_ctx(intrin)); /* while (whole >= newbase2) */
+    ast_function *func       = intrin_value(intrin, &value, "ln", TYPE_FLOAT);
+    size_t        i;
 
-    /* local */
-    vec_push(body->locals, local);
+    vec_push(value->expression.params, power);
+    vec_push(value->expression.params, base);
 
-    /* assignment to local of value 1.0f */
-    vec_push(body->exprs,
-        (ast_expression*)ast_store_new (
+    vec_push(block->locals, whole);
+    vec_push(block->locals, nth);
+    vec_push(block->locals, sign);
+    vec_push(block->locals, eps);
+    vec_push(block->locals, A_i);
+    vec_push(block->locals, B_i);
+    vec_push(block->locals, A_iminus1);
+    vec_push(block->locals, B_iminus1);
+
+    /* sign = 1.0f; */
+    vec_push(block->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
             INSTR_STORE_F,
-            (ast_expression*)local,
-            (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
+            (ast_expression*)sign,
+            (ast_expression*)intrin->fold->imm_float[1]
         )
     );
 
-    /* y >>= 2 */
-    vec_push(l2b->exprs,
-        (ast_expression*)ast_binstore_new (
+    /* eps = __builtin_epsilon(); */
+    vec_push(block->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
             INSTR_STORE_F,
-            INSTR_MUL_F,
-            (ast_expression*)arg2,
-            (ast_expression*)fold_constgen_float(intrin->parser->fold, 0.25f)
+            (ast_expression*)eps,
+            (ast_expression*)ast_call_new(
+                intrin_ctx(intrin),
+                intrin_func_self(intrin, "__builtin_epsilon", "ln")
+            )
         )
     );
 
-    /* x *= x */
-    vec_push(l2b->exprs,
-        (ast_expression*)ast_binstore_new (
+    /*
+     * A_i       = 1;
+     * B_i       = 0;
+     * A_iminus1 = 0;
+     * B_iminus1 = 1;
+     */
+    for (i = 0; i <= 1; i++) {
+        int j;
+        for (j = 1; j >= 0; j--) {
+            vec_push(block->exprs,
+                (ast_expression*)ast_store_new(
+                    intrin_ctx(intrin),
+                    INSTR_STORE_F,
+                    (ast_expression*)((j) ? ((i) ? B_iminus1 : A_i)
+                                          : ((i) ? A_iminus1 : B_i)),
+                    (ast_expression*)intrin->fold->imm_float[j]
+                )
+            );
+        }
+    }
+
+    /*
+     * <plt1> = {
+     *     power = 1.0f / power;
+     *     sign *= -1.0f;
+     * }
+     * <blt1> = {
+     *     base  = 1.0f / base;
+     *     sign *= -1.0f;
+     * }
+     */
+    for (i = 0; i <= 1; i++) {
+        vec_push(((i) ? blt1 : plt1)->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i) ? base : power),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_DIV_F,
+                    (ast_expression*)intrin->fold->imm_float[1],
+                    (ast_expression*)((i) ? base : power)
+                )
+            )
+        );
+        vec_push(plt1->exprs,
+            (ast_expression*)ast_binstore_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                INSTR_MUL_F,
+                (ast_expression*)sign,
+                (ast_expression*)intrin->fold->imm_float[2]
+            )
+        );
+    }
+
+    /*
+     * <plt1orblt1> = {
+     *     if (power <= 0.0 || base <= 0.0f)
+     *         return __builtin_nan();
+     *     if (power < 1.0f)
+     *         <plt1>
+     *     if (base < 1.0f)
+     *         <blt1>
+     * }
+     */
+    vec_push(plt1orblt1->exprs,
+        (ast_expression*)ast_ifthen_new(
             intrin_ctx(intrin),
-            INSTR_STORE_F,
-            INSTR_MUL_F,
-            (ast_expression*)arg1,
-            (ast_expression*)arg1
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_OR,
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LE,
+                    (ast_expression*)power,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                ),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LE,
+                    (ast_expression*)base,
+                    (ast_expression*)intrin->fold->imm_float[0]
+                )
+            ),
+            (ast_expression*)ast_return_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_call_new(
+                    intrin_ctx(intrin),
+                    intrin_func_self(intrin, "__builtin_nan", "ln")
+                )
+            ),
+            NULL
         )
     );
 
-    /* while (!(y&1)) */
-    loop2 = ast_loop_new (
-        intrin_ctx(intrin),
-        NULL,
-        (ast_expression*)ast_binary_new (
-            intrin_ctx(intrin),
-            INSTR_AND,
-            (ast_expression*)arg2,
-            (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
-        ),
-        true, /* ! not */
-        NULL,
-        false,
-        NULL,
-        (ast_expression*)l2b
-    );
+    for (i = 0; i <= 1; i++) {
+        vec_push(plt1orblt1->exprs,
+            (ast_expression*)ast_ifthen_new(
+                intrin_ctx(intrin),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_LT,
+                    (ast_expression*)((i) ? base : power),
+                    (ast_expression*)intrin->fold->imm_float[1]
+                ),
+                (ast_expression*)((i) ? blt1 : plt1),
+                NULL
+            )
+        );
+    }
+
+    vec_push(block->exprs, (ast_expression*)plt1orblt1);
 
-    /* push nested loop into loop expressions */
-    vec_push(l1b->exprs, (ast_expression*)loop2);
 
-    /* y-- */
-    vec_push(l1b->exprs,
-        (ast_expression*)ast_binstore_new (
+    /* whole = power; */
+    vec_push(forloop->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
             INSTR_STORE_F,
-            INSTR_SUB_F,
-            (ast_expression*)arg2,
-            (ast_expression*)intrin->fold->imm_float[1] /* 1 == 1.0f */
+            (ast_expression*)whole,
+            (ast_expression*)power
         )
     );
-    /* local *= x */
-    vec_push(l1b->exprs,
-        (ast_expression*)ast_binstore_new (
+
+    /* nth = 0.0f; */
+    vec_push(forloop->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
             INSTR_STORE_F,
-            INSTR_MUL_F,
-            (ast_expression*)local,
-            (ast_expression*)arg1
+            (ast_expression*)nth,
+            (ast_expression*)intrin->fold->imm_float[0]
         )
     );
 
-    /* while (y > 0) */
-    loop1 = ast_loop_new (
-        intrin_ctx(intrin),
-        NULL,
-        (ast_expression*)ast_binary_new (
+    /* base2 = base; */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
-            INSTR_GT,
-            (ast_expression*)arg2,
-            (ast_expression*)intrin->fold->imm_float[0] /* 0 == 0.0f */
-        ),
-        false,
-        NULL,
-        false,
-        NULL,
-        (ast_expression*)l1b
+            INSTR_STORE_F,
+            (ast_expression*)base2,
+            (ast_expression*)base
+        )
     );
 
-    /* push the loop1 into the body for the function */
-    vec_push(body->exprs, (ast_expression*)loop1);
-
-    /* return local; */
-    vec_push(body->exprs,
-        (ast_expression*)ast_return_new (
+    /* n2 = 1.0f; */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_store_new(
             intrin_ctx(intrin),
-            (ast_expression*)local
+            INSTR_STORE_F,
+            (ast_expression*)n2,
+            (ast_expression*)intrin->fold->imm_float[1]
         )
     );
 
-    /* push block and register intrin for codegen */
-    vec_push(func->blocks, body);
+    /* newbase2 = base2 * base2; */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)newbase2,
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_MUL_F,
+                (ast_expression*)base2,
+                (ast_expression*)base2
+            )
+        )
+    );
 
-    intrin_reg(intrin, value, func);
+    /* while loop locals */
+    vec_push(whileloop->locals, base2);
+    vec_push(whileloop->locals, n2);
+    vec_push(whileloop->locals, newbase2);
 
-    return (ast_expression*)value;
-}
+    /* base2 = newbase2; */
+    vec_push(nestwhile->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)base2,
+            (ast_expression*)newbase2
+        )
+    );
 
-static ast_expression *intrin_mod(intrin_t *intrin) {
-    /*
-     * float mod(float x, float y) {
-     *   return x - y * floor(x / y);
-     * }
-     */
-    ast_value    *value = NULL;
-    ast_call     *call  = ast_call_new (intrin_ctx(intrin), intrin_func(intrin, "floor"));
-    ast_value    *arg1  = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
-    ast_value    *arg2  = ast_value_new(intrin_ctx(intrin), "y", TYPE_FLOAT);
-    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
-    ast_function *func  = intrin_value(intrin, &value, "mod", TYPE_FLOAT);
+    /* n2 *= 2; */
+    vec_push(nestwhile->exprs,
+        (ast_expression*)ast_binstore_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            INSTR_MUL_F,
+            (ast_expression*)n2,
+            (ast_expression*)intrin->fold->imm_float[3] /* 2.0f */
+        )
+    );
 
-    /* floor(x/y) */
-    vec_push(call->params,
-        (ast_expression*)ast_binary_new (
+    /* newbase2 *= newbase2; */
+    vec_push(nestwhile->exprs,
+        (ast_expression*)ast_binstore_new(
             intrin_ctx(intrin),
-            INSTR_DIV_F,
-            (ast_expression*)arg1,
-            (ast_expression*)arg2
+            INSTR_STORE_F,
+            INSTR_MUL_F,
+            (ast_expression*)newbase2,
+            (ast_expression*)newbase2
         )
     );
 
-    vec_push(body->exprs,
-        (ast_expression*)ast_return_new(
+    /* while (whole >= newbase2) */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_loop_new(
             intrin_ctx(intrin),
+            NULL,
             (ast_expression*)ast_binary_new(
                 intrin_ctx(intrin),
-                INSTR_SUB_F,
-                (ast_expression*)arg1,
-                (ast_expression*)ast_binary_new(
-                    intrin_ctx(intrin),
-                    INSTR_MUL_F,
-                    (ast_expression*)arg2,
-                    (ast_expression*)call
-                )
-            )
+                INSTR_GE,
+                (ast_expression*)whole,
+                (ast_expression*)newbase2
+            ),
+            false,
+            NULL,
+            false,
+            NULL,
+            (ast_expression*)nestwhile
         )
     );
 
-    vec_push(value->expression.params, arg1); /* float x (for param) */
-    vec_push(value->expression.params, arg2); /* float y (for param) */
-
-    vec_push(func->blocks,             body); /* {{{ body }}} */
-
-    intrin_reg(intrin, value, func);
-
-    return (ast_expression*)value;
-}
-
-static ast_expression *intrin_exp(intrin_t *intrin) {
-    /*
-     * float exp(float x) {
-     *     return pow(QC_M_E, x);
-     * }
-     */
-    ast_value    *value = NULL;
-    ast_call     *call  = ast_call_new (intrin_ctx(intrin), intrin_func(intrin, "pow"));
-    ast_value    *arg1  = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
-    ast_block    *body  = ast_block_new(intrin_ctx(intrin));
-    ast_function *func  = intrin_value(intrin, &value, "exp", TYPE_FLOAT);
-
-    /* push arguments for params to call */
-    vec_push(call->params, (ast_expression*)fold_constgen_float(intrin->fold, QC_M_E));
-    vec_push(call->params, (ast_expression*)arg1);
-
-    /* return pow(QC_M_E, x) */
-    vec_push(body->exprs,
-        (ast_expression*)ast_return_new(
+    /* whole /= base2; */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_binstore_new(
             intrin_ctx(intrin),
-            (ast_expression*)call
+            INSTR_STORE_F,
+            INSTR_DIV_F,
+            (ast_expression*)whole,
+            (ast_expression*)base2
         )
     );
 
-    vec_push(value->expression.params, arg1); /* float x (for param) */
-
-    vec_push(func->blocks,             body); /* {{{ body }}} */
-
-    intrin_reg(intrin, value, func);
-
-    return (ast_expression*)value;
-}
-
-static ast_expression *intrin_isnan(intrin_t *intrin) {
-    /*
-     * float isnan(float x) {
-     *   float local;
-     *   local = x;
-     *
-     *   return (x != local);
-     * }
-     */
-    ast_value    *value  = NULL;
-    ast_value    *arg1   = ast_value_new(intrin_ctx(intrin), "x",     TYPE_FLOAT);
-    ast_value    *local  = ast_value_new(intrin_ctx(intrin), "local", TYPE_FLOAT);
-    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
-    ast_function *func   = intrin_value(intrin, &value, "isnan", TYPE_FLOAT);
-
-    vec_push(body->locals, local);
-    vec_push(body->exprs,
-        (ast_expression*)ast_store_new(
+    /* nth += n2; */
+    vec_push(whileloop->exprs,
+        (ast_expression*)ast_binstore_new(
             intrin_ctx(intrin),
             INSTR_STORE_F,
-            (ast_expression*)local,
-            (ast_expression*)arg1
+            INSTR_ADD_F,
+            (ast_expression*)nth,
+            (ast_expression*)n2
         )
     );
 
-    vec_push(body->exprs,
-        (ast_expression*)ast_return_new(
+    /* while (whole >= base) */
+    vec_push(forloop->exprs,
+        (ast_expression*)ast_loop_new(
             intrin_ctx(intrin),
+            NULL,
             (ast_expression*)ast_binary_new(
                 intrin_ctx(intrin),
-                INSTR_NE_F,
-                (ast_expression*)arg1,
-                (ast_expression*)local
-            )
+                INSTR_GE,
+                (ast_expression*)whole,
+                (ast_expression*)base
+            ),
+            false,
+            NULL,
+            false,
+            NULL,
+            (ast_expression*)whileloop
         )
     );
 
-    vec_push(value->expression.params, arg1);
-    vec_push(func->blocks, body);
+    vec_push(forloop->locals, b_iplus1);
+    vec_push(forloop->locals, A_iplus1);
+    vec_push(forloop->locals, B_iplus1);
 
-    intrin_reg(intrin, value, func);
+    /* b_iplus1 = nth; */
+    vec_push(forloop->exprs,
+        (ast_expression*)ast_store_new(
+            intrin_ctx(intrin),
+            INSTR_STORE_F,
+            (ast_expression*)b_iplus1,
+            (ast_expression*)nth
+        )
+    );
 
-    return (ast_expression*)value;
-}
+    /*
+     * A_iplus1 = b_iplus1 * A_i + A_iminus1;
+     * B_iplus1 = b_iplus1 * B_i + B_iminus1;
+     */
+    for (i = 0; i <= 1; i++) {
+        vec_push(forloop->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i) ? B_iplus1 : A_iplus1),
+                (ast_expression*)ast_binary_new(
+                    intrin_ctx(intrin),
+                    INSTR_ADD_F,
+                    (ast_expression*)ast_binary_new(
+                        intrin_ctx(intrin),
+                        INSTR_MUL_F,
+                        (ast_expression*)b_iplus1,
+                        (ast_expression*) ((i) ? B_i : A_i)
+                    ),
+                    (ast_expression*)((i) ? B_iminus1 : A_iminus1)
+                )
+            )
+        );
+    }
 
-static ast_expression *intrin_fabs(intrin_t *intrin) {
     /*
-     * float fabs(float x) {
-     *     return x < 0 ? -x : x;
-     * }
+     * A_iminus1 = A_i;
+     * B_iminus1 = B_i;
      */
-    ast_value    *value  = NULL;
-    ast_value    *arg1   = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT);
-    ast_block    *body   = ast_block_new(intrin_ctx(intrin));
-    ast_function *func   = intrin_value(intrin, &value, "fabs", TYPE_FLOAT);
+    for (i = 0; i <= 1; i++) {
+        vec_push(forloop->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i) ? B_iminus1 : A_iminus1),
+                (ast_expression*)((i) ? B_i       : A_i)
+            )
+        );
+    }
 
-    vec_push(body->exprs,
-        (ast_expression*)ast_return_new(
+    /*
+     * A_i = A_iplus1;
+     * B_i = B_iplus1;
+     */
+    for (i = 0; i <= 1; i++) {
+        vec_push(forloop->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i) ? B_i      : A_i),
+                (ast_expression*)((i) ? B_iplus1 : A_iplus1)
+            )
+        );
+    }
+
+    /*
+     * if (whole <= 1.0f + eps)
+     *     break;
+     */
+    vec_push(forloop->exprs,
+        (ast_expression*)ast_ifthen_new(
             intrin_ctx(intrin),
-            (ast_expression*)ast_ternary_new(
+            (ast_expression*)ast_binary_new(
                 intrin_ctx(intrin),
+                INSTR_LE,
+                (ast_expression*)whole,
                 (ast_expression*)ast_binary_new(
                     intrin_ctx(intrin),
-                    INSTR_LE,
-                    (ast_expression*)arg1,
-                    (ast_expression*)intrin->fold->imm_float[0]
-                ),
+                    INSTR_ADD_F,
+                    (ast_expression*)intrin->fold->imm_float[1],
+                    (ast_expression*)eps
+                )
+            ),
+            (ast_expression*)ast_breakcont_new(
+                intrin_ctx(intrin),
+                false,
+                0
+            ),
+            NULL
+        )
+    );
+
+    /*
+     * power = base;
+     * base  = whole;
+     */
+    for (i = 0; i <= 1; i++) {
+        vec_push(forloop->exprs,
+            (ast_expression*)ast_store_new(
+                intrin_ctx(intrin),
+                INSTR_STORE_F,
+                (ast_expression*)((i) ? base  : power),
+                (ast_expression*)((i) ? whole : base)
+            )
+        );
+    }
+
+    /* add the for loop block */
+    vec_push(block->exprs,
+        (ast_expression*)ast_loop_new(
+            intrin_ctx(intrin),
+            NULL,
+            /* for(; 1; ) ?? (can this be NULL too?) */
+            (ast_expression*)intrin->fold->imm_float[1],
+            false,
+            NULL,
+            false,
+            NULL,
+            (ast_expression*)forloop
+        )
+    );
+
+    /* return sign * A_i / B_il */
+    vec_push(block->exprs,
+        (ast_expression*)ast_return_new(
+            intrin_ctx(intrin),
+            (ast_expression*)ast_binary_new(
+                intrin_ctx(intrin),
+                INSTR_MUL_F,
+                (ast_expression*)sign,
                 (ast_expression*)ast_binary_new(
                     intrin_ctx(intrin),
-                    INSTR_SUB_F,
-                    (ast_expression*)intrin->fold->imm_float[0],
-                    (ast_expression*)arg1
-                ),
-                (ast_expression*)arg1
+                    INSTR_DIV_F,
+                    (ast_expression*)A_i,
+                    (ast_expression*)B_i
+                )
             )
         )
     );
 
-    vec_push(value->expression.params, arg1);
-    vec_push(func->blocks, body);
-
+    vec_push(func->blocks, block);
     intrin_reg(intrin, value, func);
 
     return (ast_expression*)value;
 }
 
+#define LOG_VARIANT(NAME, BASE) \
+static ast_expression *intrin_##NAME(intrin_t *intrin) { \
+    ast_value    *value  = NULL; \
+    ast_call     *callln = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "__builtin_ln", #NAME)); \
+    ast_value    *arg1   = ast_value_new(intrin_ctx(intrin), "x", TYPE_FLOAT); \
+    ast_block    *body   = ast_block_new(intrin_ctx(intrin)); \
+    ast_function *func   = intrin_value(intrin, &value, #NAME, TYPE_FLOAT); \
+    vec_push(value->expression.params, arg1); \
+    vec_push(callln->params, (ast_expression*)arg1); \
+    vec_push(callln->params, (ast_expression*)fold_constgen_float(intrin->fold, BASE)); \
+    vec_push(body->exprs, \
+        (ast_expression*)ast_return_new( \
+            intrin_ctx(intrin), \
+            (ast_expression*)callln \
+        ) \
+    ); \
+    vec_push(func->blocks, body); \
+    intrin_reg(intrin, value, func); \
+    return (ast_expression*)value; \
+}
+LOG_VARIANT(log, 2.7182818284590452354)
+LOG_VARIANT(log10, 10)
+LOG_VARIANT(log2, 2)
+LOG_VARIANT(logb, 2) /* FLT_RADIX == 2 for now */
+#undef LOG_VARIANT
+
 /*
  * TODO: make static (and handle ast_type_string) here for the builtin
  * instead of in SYA parse close.
@@ -381,12 +1937,30 @@ ast_expression *intrin_debug_typestring(intrin_t *intrin) {
 }
 
 static const intrin_func_t intrinsics[] = {
-    {&intrin_exp,              "__builtin_exp",              "exp",   1},
-    {&intrin_mod,              "__builtin_mod",              "mod",   2},
-    {&intrin_pow,              "__builtin_pow",              "pow",   2},
-    {&intrin_isnan,            "__builtin_isnan",            "isnan", 1},
-    {&intrin_fabs,             "__builtin_fabs",             "fabs",  1},
-    {&intrin_debug_typestring, "__builtin_debug_typestring", "",      0}
+    {&intrin_isfinite,         "__builtin_isfinite",         "isfinite", 1},
+    {&intrin_isinf,            "__builtin_isinf",            "isinf",    1},
+    {&intrin_isnan,            "__builtin_isnan",            "isnan",    1},
+    {&intrin_isnormal,         "__builtin_isnormal",         "isnormal", 1},
+    {&intrin_signbit,          "__builtin_signbit",          "signbit",  1},
+    {&intrin_acosh,            "__builtin_acosh",            "acosh",    1},
+    {&intrin_asinh,            "__builtin_asinh",            "asinh",    1},
+    {&intrin_atanh,            "__builtin_atanh",            "atanh",    1},
+    {&intrin_exp,              "__builtin_exp",              "exp",      1},
+    {&intrin_exp2,             "__builtin_exp2",             "exp2",     1},
+    {&intrin_expm1,            "__builtin_expm1",            "expm1",    1},
+    {&intrin_mod,              "__builtin_mod",              "mod",      2},
+    {&intrin_pow,              "__builtin_pow",              "pow",      2},
+    {&intrin_fabs,             "__builtin_fabs",             "fabs",     1},
+    {&intrin_log,              "__builtin_log",              "log",      1},
+    {&intrin_log10,            "__builtin_log10",            "log10",    1},
+    {&intrin_log2,             "__builtin_log2",             "log2",     1},
+    {&intrin_logb,             "__builtin_logb",             "logb",     1},
+    {&intrin_epsilon,          "__builtin_epsilon",          "",         0},
+    {&intrin_nan,              "__builtin_nan",              "",         0},
+    {&intrin_inf,              "__builtin_inf",              "",         0},
+    {&intrin_ln,               "__builtin_ln",               "",         2},
+    {&intrin_debug_typestring, "__builtin_debug_typestring", "",         0},
+    {&intrin_nullfunc,         "#nullfunc",                  "",         0}
 };
 
 static void intrin_error(intrin_t *intrin, const char *fmt, ...) {
@@ -445,7 +2019,7 @@ static GMQCC_INLINE ast_expression *intrin_func_try(intrin_t *intrin, size_t off
     return NULL;
 }
 
-ast_expression *intrin_func(intrin_t *intrin, const char *name) {
+static ast_expression *intrin_func_self(intrin_t *intrin, const char *name, const char *from) {
     size_t           i;
     ast_expression  *find;
 
@@ -461,6 +2035,13 @@ ast_expression *intrin_func(intrin_t *intrin, const char *name) {
     if ((find = intrin_func_try(intrin, offsetof(intrin_func_t, alias), name)))
         return find;
 
-    intrin_error(intrin, "need function: `%s` compiler depends on it", name);
+    if (from) {
+        intrin_error(intrin, "need function `%s', compiler depends on it for `__builtin_%s'", name, from);
+        return intrin_func_self(intrin, "#nullfunc", NULL);
+    }
     return NULL;
 }
+
+ast_expression *intrin_func(intrin_t *intrin, const char *name) {
+    return intrin_func_self(intrin, name, NULL);
+}
diff --git a/ir.c b/ir.c
index 7d83720c4d4afb3cd56ec90a08b9cc1ad7dde9d3..c935214cb14cd05fd17d66396b107a059d384732 100644 (file)
--- a/ir.c
+++ b/ir.c
@@ -1892,7 +1892,7 @@ ir_value* ir_block_create_unary(ir_block *self, lex_ctx_t ctx,
         case VINSTR_NEG_F:
             return ir_block_create_general_instr(self, ctx, label, INSTR_SUB_F, NULL, operand, ot);
         case VINSTR_NEG_V:
-            return ir_block_create_general_instr(self, ctx, label, INSTR_SUB_V, NULL, operand, ot);
+            return ir_block_create_general_instr(self, ctx, label, INSTR_SUB_V, NULL, operand, TYPE_VECTOR);
 
         default:
             ot = operand->vtype;
diff --git a/lexer.c b/lexer.c
index b6d5ceb6d3bd94aed4e4cc0bb0d2926d932b9b6a..d153459ebc8fe87318e05dcddbf35306b84edd97 100644 (file)
--- a/lexer.c
+++ b/lexer.c
@@ -82,91 +82,8 @@ static bool lexwarn(lex_file *lex, int warntype, const char *fmt, ...)
     return r;
 }
 
-
-#if 0
-token* token_new()
-{
-    token *tok = (token*)mem_a(sizeof(token));
-    if (!tok)
-        return NULL;
-    memset(tok, 0, sizeof(*tok));
-    return tok;
-}
-
-void token_delete(token *self)
-{
-    if (self->next && self->next->prev == self)
-        self->next->prev = self->prev;
-    if (self->prev && self->prev->next == self)
-        self->prev->next = self->next;
-    MEM_VECTOR_CLEAR(self, value);
-    mem_d(self);
-}
-
-token* token_copy(const token *cp)
-{
-    token* self = token_new();
-    if (!self)
-        return NULL;
-    /* copy the value */
-    self->value_alloc = cp->value_count + 1;
-    self->value_count = cp->value_count;
-    self->value = (char*)mem_a(self->value_alloc);
-    if (!self->value) {
-        mem_d(self);
-        return NULL;
-    }
-    memcpy(self->value, cp->value, cp->value_count);
-    self->value[self->value_alloc-1] = 0;
-
-    /* rest */
-    self->ctx = cp->ctx;
-    self->ttype = cp->ttype;
-    memcpy(&self->constval, &cp->constval, sizeof(self->constval));
-    return self;
-}
-
-void token_delete_all(token *t)
-{
-    token *n;
-
-    do {
-        n = t->next;
-        token_delete(t);
-        t = n;
-    } while(t);
-}
-
-token* token_copy_all(const token *cp)
-{
-    token *cur;
-    token *out;
-
-    out = cur = token_copy(cp);
-    if (!out)
-        return NULL;
-
-    while (cp->next) {
-        cp = cp->next;
-        cur->next = token_copy(cp);
-        if (!cur->next) {
-            token_delete_all(out);
-            return NULL;
-        }
-        cur->next->prev = cur;
-        cur = cur->next;
-    }
-
-    return out;
-}
-#else
 static void lex_token_new(lex_file *lex)
 {
-#if 0
-    if (lex->tok)
-        token_delete(lex->tok);
-    lex->tok = token_new();
-#else
     if (lex->tok.value)
         vec_shrinkto(lex->tok.value, 0);
 
@@ -174,14 +91,16 @@ static void lex_token_new(lex_file *lex)
     lex->tok.ctx.line    = lex->sline;
     lex->tok.ctx.file    = lex->name;
     lex->tok.ctx.column  = lex->column;
-#endif
 }
-#endif
+
+static void lex_ungetch(lex_file *lex, int ch);
+static int lex_getch(lex_file *lex);
 
 lex_file* lex_open(const char *file)
 {
     lex_file  *lex;
     fs_file_t *in = fs_file_open(file, "rb");
+    uint32_t   read;
 
     if (!in) {
         lexerror(NULL, "open failed: '%s'\n", file);
@@ -204,6 +123,19 @@ lex_file* lex_open(const char *file)
     lex->peekpos = 0;
     lex->eof     = false;
 
+    /* handle BOM */
+    if ((read = (lex_getch(lex) << 16) | (lex_getch(lex) << 8) | lex_getch(lex)) != 0xEFBBBF) {
+        lex_ungetch(lex, (read & 0x0000FF));
+        lex_ungetch(lex, (read & 0x00FF00) >> 8);
+        lex_ungetch(lex, (read & 0xFF0000) >> 16);
+    } else {
+        /*
+         * otherwise the lexer has advanced 3 bytes for the BOM, we need
+         * to set the column back to 0
+         */
+        lex->column = 0;
+    }
+
     vec_push(lex_filenames, lex->name);
     return lex;
 }
@@ -256,16 +188,15 @@ void lex_close(lex_file *lex)
 
     if (lex->file)
         fs_file_close(lex->file);
-#if 0
-    if (lex->tok)
-        token_delete(lex->tok);
-#else
+
     vec_free(lex->tok.value);
-#endif
+
     /* mem_d(lex->name); collected in lex_filenames */
     mem_d(lex);
 }
 
+
+
 static int lex_fgetc(lex_file *lex)
 {
     if (lex->file) {
@@ -286,7 +217,6 @@ static int lex_fgetc(lex_file *lex)
  * are working on.
  * The are merely wrapping get/put in order to count line numbers.
  */
-static void lex_ungetch(lex_file *lex, int ch);
 static int lex_try_trigraph(lex_file *lex, int old)
 {
     int c2, c3;
@@ -606,10 +536,6 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
 
                 if (lex->flags.preprocessing) {
                     haswhite = true;
-                    /*
-                    lex_tokench(lex, '/');
-                    lex_tokench(lex, '/');
-                    */
                     lex_tokench(lex, ' ');
                     lex_tokench(lex, ' ');
                 }
@@ -631,10 +557,6 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
                 /* multiline comment */
                 if (lex->flags.preprocessing) {
                     haswhite = true;
-                    /*
-                    lex_tokench(lex, '/');
-                    lex_tokench(lex, '*');
-                    */
                     lex_tokench(lex, ' ');
                     lex_tokench(lex, ' ');
                 }
@@ -646,10 +568,6 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
                         ch = lex_getch(lex);
                         if (ch == '/') {
                             if (lex->flags.preprocessing) {
-                                /*
-                                lex_tokench(lex, '*');
-                                lex_tokench(lex, '/');
-                                */
                                 lex_tokench(lex, ' ');
                                 lex_tokench(lex, ' ');
                             }
@@ -661,7 +579,7 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
                         if (ch == '\n')
                             lex_tokench(lex, '\n');
                         else
-                            lex_tokench(lex, ' '); /* ch); */
+                            lex_tokench(lex, ' ');
                     }
                 }
                 ch = ' '; /* cause TRUE in the isspace check */
@@ -1008,10 +926,6 @@ int lex_do(lex_file *lex)
     bool hadwhite = false;
 
     lex_token_new(lex);
-#if 0
-    if (!lex->tok)
-        return TOKEN_FATAL;
-#endif
 
     while (true) {
         ch = lex_skipwhite(lex, hadwhite);
@@ -1256,10 +1170,6 @@ int lex_do(lex_file *lex)
          */
         switch (ch)
         {
-            /*
-            case '+':
-            case '-':
-            */
             case '*':
             case '/':
             case '<':
@@ -1367,15 +1277,6 @@ int lex_do(lex_file *lex)
         return (lex->tok.ttype = TOKEN_OPERATOR);
     }
 
-    /*
-    if (ch == '^' || ch == '~' || ch == '!')
-    {
-        lex_tokench(lex, ch);
-        lex_endtoken(lex);
-        return (lex->tok.ttype = TOKEN_OPERATOR);
-    }
-    */
-
     if (ch == '*' || ch == '/') /* *=, /= */
     {
         lex_tokench(lex, ch);
diff --git a/lexer.h b/lexer.h
index 44f6491725c17a5dc458cdf789a0e2b8cf248450..3f4949de21319bbfc03dea8c011ed3992a3d1b8f 100644 (file)
--- a/lexer.h
+++ b/lexer.h
@@ -22,6 +22,8 @@
  */
 #ifndef GMQCC_LEXER_HDR
 #define GMQCC_LEXER_HDR
+#include "gmqcc.h"
+
 typedef struct token_s token;
 
 struct token_s {
@@ -185,8 +187,7 @@ static const oper_info c_operators[] = {
     { "++",  1, opid3('+','+','P'), ASSOC_RIGHT, 16, OP_PREFIX, false},
     { "--",  1, opid3('-','-','P'), ASSOC_RIGHT, 16, OP_PREFIX, false},
 
-    { "**",  2, opid2('*','*'),     ASSOC_RIGHT, 15, 0,         true},
-
+    { "**",  2, opid2('*','*'),     ASSOC_RIGHT, 14, 0,         true},
     { "!",   1, opid2('!','P'),     ASSOC_RIGHT, 14, OP_PREFIX, true},
     { "~",   1, opid2('~','P'),     ASSOC_RIGHT, 14, OP_PREFIX, true},
     { "+",   1, opid2('+','P'),     ASSOC_RIGHT, 14, OP_PREFIX, false},
diff --git a/opts.c b/opts.c
index e50bd7441791925861f046a3420b1d90e6d0454a..e54ec573021fe2c2d1e0707de927bb0322499f2f 100644 (file)
--- a/opts.c
+++ b/opts.c
@@ -92,6 +92,7 @@ static void opts_setdefault(void) {
     opts_set(opts.warn,  WARN_PARENTHESIS,               true);
     opts_set(opts.warn,  WARN_CONST_OVERWRITE,           true);
     opts_set(opts.warn,  WARN_DIRECTIVE_INMACRO,         true);
+    opts_set(opts.warn,  WARN_BUILTINS,                  true);
 
     /* flags */
     opts_set(opts.flags, ADJUST_VECTOR_FIELDS,           true);
index 57625ddb3ce23bde3bbfde21b48e364971cd3bf1..b2099886b0c7913ee028825fcb17bd5b84615fcf 100644 (file)
--- a/opts.def
+++ b/opts.def
@@ -96,6 +96,7 @@
     GMQCC_DEFINE_FLAG(BREAKDEF)
     GMQCC_DEFINE_FLAG(CONST_OVERWRITE)
     GMQCC_DEFINE_FLAG(DIRECTIVE_INMACRO)
+    GMQCC_DEFINE_FLAG(BUILTINS)
 #endif
 
 #ifdef GMQCC_TYPE_OPTIMIZATIONS
index 2dc25508449e2771220d08d5907c3f01799fb183..f3bfdfb6ff23e72b1fd674aaaab8e4ef96030472 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -476,7 +476,10 @@ static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
                                   type_name[exprs[0]->vtype]);
                 return false;
             }
-            out = (ast_expression*)ast_unary_new(ctx, (VINSTR_NEG_F-TYPE_FLOAT) + exprs[0]->vtype, exprs[0]);
+            if (exprs[0]->vtype == TYPE_FLOAT)
+                out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
+            else
+                out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
             break;
 
         case opid2('!','P'):
@@ -1581,6 +1584,23 @@ static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
                 var = intrin_func(parser->intrin, parser_tokval(parser));
             }
 
+            /*
+             * Try it again, intrin_func deals with the alias method as well
+             * the first one masks for __builtin though, we emit warning here.
+             */
+            if (!var) {
+                if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
+                    (void)!compile_warning(
+                        parser_ctx(parser),
+                        WARN_BUILTINS,
+                        "using implicitly defined builtin `__builtin_%s' for `%s'",
+                        parser_tokval(parser),
+                        parser_tokval(parser)
+                    );
+                }
+            }
+
+
             if (!var) {
                 char *correct = NULL;
                 size_t i;
@@ -5421,6 +5441,7 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield
                      */
                     char   *defname = NULL;
                     size_t  prefix_len, ln;
+                    size_t  sn, sn_size;
 
                     ln = strlen(parser->function->name);
                     vec_append(defname, ln, parser->function->name);
@@ -5442,6 +5463,24 @@ static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofield
                     /* now rename the global */
                     ln = strlen(var->name);
                     vec_append(defname, ln, var->name);
+                    /* if a variable of that name already existed, add the
+                     * counter value.
+                     * The counter is incremented either way.
+                     */
+                    sn_size = vec_size(parser->function->static_names);
+                    for (sn = 0; sn != sn_size; ++sn) {
+                        if (strcmp(parser->function->static_names[sn], var->name) == 0)
+                            break;
+                    }
+                    if (sn != sn_size) {
+                        char *num = NULL;
+                        int   len = util_asprintf(&num, "#%u", parser->function->static_count);
+                        vec_append(defname, len, num);
+                        mem_d(num);
+                    }
+                    else
+                        vec_push(parser->function->static_names, util_strdup(var->name));
+                    parser->function->static_count++;
                     ast_value_set_name(var, defname);
 
                     /* push it to the to-be-generated globals */
@@ -5692,17 +5731,18 @@ skipvar:
             if (!cexp)
                 break;
 
-            if (!localblock) {
+            if (!localblock || is_static) {
                 cval = (ast_value*)cexp;
                 if (cval != parser->nil &&
                     (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
                    )
                 {
-                    parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
+                    parseerror(parser, "initializer is non constant");
                 }
                 else
                 {
-                    if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
+                    if (!is_static &&
+                        !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
                         qualifier != CV_VAR)
                     {
                         var->cvq = CV_CONST;
diff --git a/stat.c b/stat.c
index e46102da51d3ec8e337cfb49217615be63af7f56..eedb0a41bec5261d0a5d471475e6603caf898e70 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -402,7 +402,7 @@ typedef struct hash_node_t {
  */
 #if 1
 #define GMQCC_ROTL32(X, R) (((X) << (R)) | ((X) >> (32 - (R))))
-GMQCC_INLINE size_t util_hthash(hash_table_t *ht, const char *key) {
+size_t util_hthash(hash_table_t *ht, const char *key) {
     const unsigned char *data   = (const unsigned char *)key;
     const size_t         len    = strlen(key);
     const size_t         block  = len / 4;
@@ -685,7 +685,7 @@ void util_htdel(hash_table_t *ht) {
  * information.
  */
 static void stat_dump_mem_contents(stat_mem_block_t *block, uint16_t cols) {
-    unsigned char *buffer = mem_a(cols);
+    unsigned char *buffer = (unsigned char *)mem_a(cols);
     unsigned char *memory = (unsigned char *)(block + 1);
     size_t         i;
 
diff --git a/util.c b/util.c
index 466729eceb5631f7b399a5978ebd7910b044086b..84be6f31cc18cf89a542c6f9fda129f45b5f9cab 100644 (file)
--- a/util.c
+++ b/util.c
@@ -127,81 +127,380 @@ void util_endianswap(void *_data, size_t length, unsigned int typesize) {
 }
 
 /*
- * CRC algorithms vary in the width of the polynomial, the value of said polynomial,
- * the initial value used for the register, weather the bits of each byte are reflected
- * before being processed, weather the algorithm itself feeds input bytes through the
- * register or XORs them with a byte from one end and then straight into the table, as
- * well as (but not limited to the idea of reflected versions) where the final register
- * value becomes reversed, and finally weather the value itself is used to XOR the final
- * register value.  AS such you can already imagine how painfully annoying CRCs are,
- * of course we stand to target Quake, which expects it's certain set of rules for proper
- * calculation of a CRC.
- *
- * In most traditional CRC algorithms on uses a reflected table driven method where a value
- * or register is reflected if it's bits are swapped around it's center.  For example:
- * take the bits 0101 is the 4-bit reflection of 1010, and respectfully 0011 would be the
- * reflection of 1100. Quake however expects a NON-Reflected CRC on the output, but still
- * requires a final XOR on the values (0xFFFF and 0x0000) this is a standard CCITT CRC-16
- * which I respectfully as a programmer don't agree with.
+* Based On:
+*   Slicing-by-8 algorithms by Michael E.
+*       Kounavis and Frank L. Berry from Intel Corp.
+*       http://www.intel.com/technology/comms/perfnet/download/CRC_generators.pdf
+*
+*   This code was made to be slightly less confusing with macros, which
+*   I suppose is somewhat ironic.
+*
+*   The code had to be changed for non reflected on the output register
+*   since that's the method Quake uses.
+*
+*   The code also had to be changed for CRC16, which is slightly harder
+*   since the CRC32 method in the original Intel paper used a different
+*   bit order convention.
+*
+* Notes about the table:
+*   - It's exactly 4K in size
+*   - 64 elements fit in a cache line
+*   - can do 8 iterations unrolled 8 times for free
+*   - The first 256 elements of the table are standard CRC16 table
+*
+* Table can be generated with the following utility:
+*/
+#if 0
+#include <stdio.h>
+#include <stdint.h>
+int main(void) {
+    for (unsigned i = 0; i < 0x100; ++i) {
+        uint16_t x = i << 8;
+        for (int j = 0; j < 8; ++j)
+            x = (x << 1) ^ ((x & 0x8000) ? 0x1021 : 0);
+        tab[0][i] = x;
+    }
+    for (unsigned i = 0; i < 0x100; ++i) {
+        uint16_t c = tab[0][i];
+        for (unsigned j = 1; j < 8; ++j) {
+            c = tab[0][c >> 8] ^ (c << 8);
+            tab[j][i] = c;
+        }
+    }
+    printf("static const uint16_t util_crc16_table[8][256] = {");
+    for (int i = 0; i < 8; ++i) {
+        printf("{\n");
+        for (int j = 0; j < 0x100; ++j) {
+            printf((j & 7) ? " " : "    ");
+            printf((j != 0x100-1) ? "0x%04X," : "0x%04X", tab[i][j]);
+            if ((j & 7) == 7)
+                printf("\n");
+        }
+        printf((i != 7) ? "}," : "}");
+    }
+    printf("};\n");
+    return 0;
+}
+#endif
+/*
+ * Non-Reflective version is present as well as a reference.
  *
- * So now you know what we target, and why we target it, despite how unsettling it may seem
- * but those are what Quake seems to request.
+ * TODO:
+ *  combine the crc16 into u32s and mask off low high for byte order
+ *  to make the arrays smaller.
  */
 
-static const uint16_t util_crc16_table[] = {
-    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108,
-    0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
-    0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B,
-    0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
-    0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE,
-    0xF5CF, 0xC5AC, 0xD58D, 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6,
-    0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D,
-    0xC7BC, 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
-    0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B, 0x5AF5,
-    0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC,
-    0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A, 0x6CA6, 0x7C87, 0x4CE4,
-    0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD,
-    0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13,
-    0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
-    0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E,
-    0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
-    0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1,
-    0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB,
-    0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0,
-    0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8,
-    0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657,
-    0x7676, 0x4615, 0x5634, 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9,
-    0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882,
-    0x28A3, 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
-    0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92, 0xFD2E,
-    0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07,
-    0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1, 0xEF1F, 0xFF3E, 0xCF5D,
-    0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74,
-    0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
-};
+static const uint16_t util_crc16_table[8][256] = {{
+    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
+    0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
+    0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
+    0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
+    0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
+    0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
+    0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
+    0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
+    0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
+    0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
+    0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
+    0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
+    0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
+    0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
+    0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
+    0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
+    0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
+    0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
+    0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
+    0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
+    0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
+    0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+    0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
+    0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
+    0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
+    0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
+    0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
+    0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
+    0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
+    0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
+    0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
+    0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
+},{
+    0x0000, 0x3331, 0x6662, 0x5553, 0xCCC4, 0xFFF5, 0xAAA6, 0x9997,
+    0x89A9, 0xBA98, 0xEFCB, 0xDCFA, 0x456D, 0x765C, 0x230F, 0x103E,
+    0x0373, 0x3042, 0x6511, 0x5620, 0xCFB7, 0xFC86, 0xA9D5, 0x9AE4,
+    0x8ADA, 0xB9EB, 0xECB8, 0xDF89, 0x461E, 0x752F, 0x207C, 0x134D,
+    0x06E6, 0x35D7, 0x6084, 0x53B5, 0xCA22, 0xF913, 0xAC40, 0x9F71,
+    0x8F4F, 0xBC7E, 0xE92D, 0xDA1C, 0x438B, 0x70BA, 0x25E9, 0x16D8,
+    0x0595, 0x36A4, 0x63F7, 0x50C6, 0xC951, 0xFA60, 0xAF33, 0x9C02,
+    0x8C3C, 0xBF0D, 0xEA5E, 0xD96F, 0x40F8, 0x73C9, 0x269A, 0x15AB,
+    0x0DCC, 0x3EFD, 0x6BAE, 0x589F, 0xC108, 0xF239, 0xA76A, 0x945B,
+    0x8465, 0xB754, 0xE207, 0xD136, 0x48A1, 0x7B90, 0x2EC3, 0x1DF2,
+    0x0EBF, 0x3D8E, 0x68DD, 0x5BEC, 0xC27B, 0xF14A, 0xA419, 0x9728,
+    0x8716, 0xB427, 0xE174, 0xD245, 0x4BD2, 0x78E3, 0x2DB0, 0x1E81,
+    0x0B2A, 0x381B, 0x6D48, 0x5E79, 0xC7EE, 0xF4DF, 0xA18C, 0x92BD,
+    0x8283, 0xB1B2, 0xE4E1, 0xD7D0, 0x4E47, 0x7D76, 0x2825, 0x1B14,
+    0x0859, 0x3B68, 0x6E3B, 0x5D0A, 0xC49D, 0xF7AC, 0xA2FF, 0x91CE,
+    0x81F0, 0xB2C1, 0xE792, 0xD4A3, 0x4D34, 0x7E05, 0x2B56, 0x1867,
+    0x1B98, 0x28A9, 0x7DFA, 0x4ECB, 0xD75C, 0xE46D, 0xB13E, 0x820F,
+    0x9231, 0xA100, 0xF453, 0xC762, 0x5EF5, 0x6DC4, 0x3897, 0x0BA6,
+    0x18EB, 0x2BDA, 0x7E89, 0x4DB8, 0xD42F, 0xE71E, 0xB24D, 0x817C,
+    0x9142, 0xA273, 0xF720, 0xC411, 0x5D86, 0x6EB7, 0x3BE4, 0x08D5,
+    0x1D7E, 0x2E4F, 0x7B1C, 0x482D, 0xD1BA, 0xE28B, 0xB7D8, 0x84E9,
+    0x94D7, 0xA7E6, 0xF2B5, 0xC184, 0x5813, 0x6B22, 0x3E71, 0x0D40,
+    0x1E0D, 0x2D3C, 0x786F, 0x4B5E, 0xD2C9, 0xE1F8, 0xB4AB, 0x879A,
+    0x97A4, 0xA495, 0xF1C6, 0xC2F7, 0x5B60, 0x6851, 0x3D02, 0x0E33,
+    0x1654, 0x2565, 0x7036, 0x4307, 0xDA90, 0xE9A1, 0xBCF2, 0x8FC3,
+    0x9FFD, 0xACCC, 0xF99F, 0xCAAE, 0x5339, 0x6008, 0x355B, 0x066A,
+    0x1527, 0x2616, 0x7345, 0x4074, 0xD9E3, 0xEAD2, 0xBF81, 0x8CB0,
+    0x9C8E, 0xAFBF, 0xFAEC, 0xC9DD, 0x504A, 0x637B, 0x3628, 0x0519,
+    0x10B2, 0x2383, 0x76D0, 0x45E1, 0xDC76, 0xEF47, 0xBA14, 0x8925,
+    0x991B, 0xAA2A, 0xFF79, 0xCC48, 0x55DF, 0x66EE, 0x33BD, 0x008C,
+    0x13C1, 0x20F0, 0x75A3, 0x4692, 0xDF05, 0xEC34, 0xB967, 0x8A56,
+    0x9A68, 0xA959, 0xFC0A, 0xCF3B, 0x56AC, 0x659D, 0x30CE, 0x03FF
+},{
+    0x0000, 0x3730, 0x6E60, 0x5950, 0xDCC0, 0xEBF0, 0xB2A0, 0x8590,
+    0xA9A1, 0x9E91, 0xC7C1, 0xF0F1, 0x7561, 0x4251, 0x1B01, 0x2C31,
+    0x4363, 0x7453, 0x2D03, 0x1A33, 0x9FA3, 0xA893, 0xF1C3, 0xC6F3,
+    0xEAC2, 0xDDF2, 0x84A2, 0xB392, 0x3602, 0x0132, 0x5862, 0x6F52,
+    0x86C6, 0xB1F6, 0xE8A6, 0xDF96, 0x5A06, 0x6D36, 0x3466, 0x0356,
+    0x2F67, 0x1857, 0x4107, 0x7637, 0xF3A7, 0xC497, 0x9DC7, 0xAAF7,
+    0xC5A5, 0xF295, 0xABC5, 0x9CF5, 0x1965, 0x2E55, 0x7705, 0x4035,
+    0x6C04, 0x5B34, 0x0264, 0x3554, 0xB0C4, 0x87F4, 0xDEA4, 0xE994,
+    0x1DAD, 0x2A9D, 0x73CD, 0x44FD, 0xC16D, 0xF65D, 0xAF0D, 0x983D,
+    0xB40C, 0x833C, 0xDA6C, 0xED5C, 0x68CC, 0x5FFC, 0x06AC, 0x319C,
+    0x5ECE, 0x69FE, 0x30AE, 0x079E, 0x820E, 0xB53E, 0xEC6E, 0xDB5E,
+    0xF76F, 0xC05F, 0x990F, 0xAE3F, 0x2BAF, 0x1C9F, 0x45CF, 0x72FF,
+    0x9B6B, 0xAC5B, 0xF50B, 0xC23B, 0x47AB, 0x709B, 0x29CB, 0x1EFB,
+    0x32CA, 0x05FA, 0x5CAA, 0x6B9A, 0xEE0A, 0xD93A, 0x806A, 0xB75A,
+    0xD808, 0xEF38, 0xB668, 0x8158, 0x04C8, 0x33F8, 0x6AA8, 0x5D98,
+    0x71A9, 0x4699, 0x1FC9, 0x28F9, 0xAD69, 0x9A59, 0xC309, 0xF439,
+    0x3B5A, 0x0C6A, 0x553A, 0x620A, 0xE79A, 0xD0AA, 0x89FA, 0xBECA,
+    0x92FB, 0xA5CB, 0xFC9B, 0xCBAB, 0x4E3B, 0x790B, 0x205B, 0x176B,
+    0x7839, 0x4F09, 0x1659, 0x2169, 0xA4F9, 0x93C9, 0xCA99, 0xFDA9,
+    0xD198, 0xE6A8, 0xBFF8, 0x88C8, 0x0D58, 0x3A68, 0x6338, 0x5408,
+    0xBD9C, 0x8AAC, 0xD3FC, 0xE4CC, 0x615C, 0x566C, 0x0F3C, 0x380C,
+    0x143D, 0x230D, 0x7A5D, 0x4D6D, 0xC8FD, 0xFFCD, 0xA69D, 0x91AD,
+    0xFEFF, 0xC9CF, 0x909F, 0xA7AF, 0x223F, 0x150F, 0x4C5F, 0x7B6F,
+    0x575E, 0x606E, 0x393E, 0x0E0E, 0x8B9E, 0xBCAE, 0xE5FE, 0xD2CE,
+    0x26F7, 0x11C7, 0x4897, 0x7FA7, 0xFA37, 0xCD07, 0x9457, 0xA367,
+    0x8F56, 0xB866, 0xE136, 0xD606, 0x5396, 0x64A6, 0x3DF6, 0x0AC6,
+    0x6594, 0x52A4, 0x0BF4, 0x3CC4, 0xB954, 0x8E64, 0xD734, 0xE004,
+    0xCC35, 0xFB05, 0xA255, 0x9565, 0x10F5, 0x27C5, 0x7E95, 0x49A5,
+    0xA031, 0x9701, 0xCE51, 0xF961, 0x7CF1, 0x4BC1, 0x1291, 0x25A1,
+    0x0990, 0x3EA0, 0x67F0, 0x50C0, 0xD550, 0xE260, 0xBB30, 0x8C00,
+    0xE352, 0xD462, 0x8D32, 0xBA02, 0x3F92, 0x08A2, 0x51F2, 0x66C2,
+    0x4AF3, 0x7DC3, 0x2493, 0x13A3, 0x9633, 0xA103, 0xF853, 0xCF63
+},{
+    0x0000, 0x76B4, 0xED68, 0x9BDC, 0xCAF1, 0xBC45, 0x2799, 0x512D,
+    0x85C3, 0xF377, 0x68AB, 0x1E1F, 0x4F32, 0x3986, 0xA25A, 0xD4EE,
+    0x1BA7, 0x6D13, 0xF6CF, 0x807B, 0xD156, 0xA7E2, 0x3C3E, 0x4A8A,
+    0x9E64, 0xE8D0, 0x730C, 0x05B8, 0x5495, 0x2221, 0xB9FD, 0xCF49,
+    0x374E, 0x41FA, 0xDA26, 0xAC92, 0xFDBF, 0x8B0B, 0x10D7, 0x6663,
+    0xB28D, 0xC439, 0x5FE5, 0x2951, 0x787C, 0x0EC8, 0x9514, 0xE3A0,
+    0x2CE9, 0x5A5D, 0xC181, 0xB735, 0xE618, 0x90AC, 0x0B70, 0x7DC4,
+    0xA92A, 0xDF9E, 0x4442, 0x32F6, 0x63DB, 0x156F, 0x8EB3, 0xF807,
+    0x6E9C, 0x1828, 0x83F4, 0xF540, 0xA46D, 0xD2D9, 0x4905, 0x3FB1,
+    0xEB5F, 0x9DEB, 0x0637, 0x7083, 0x21AE, 0x571A, 0xCCC6, 0xBA72,
+    0x753B, 0x038F, 0x9853, 0xEEE7, 0xBFCA, 0xC97E, 0x52A2, 0x2416,
+    0xF0F8, 0x864C, 0x1D90, 0x6B24, 0x3A09, 0x4CBD, 0xD761, 0xA1D5,
+    0x59D2, 0x2F66, 0xB4BA, 0xC20E, 0x9323, 0xE597, 0x7E4B, 0x08FF,
+    0xDC11, 0xAAA5, 0x3179, 0x47CD, 0x16E0, 0x6054, 0xFB88, 0x8D3C,
+    0x4275, 0x34C1, 0xAF1D, 0xD9A9, 0x8884, 0xFE30, 0x65EC, 0x1358,
+    0xC7B6, 0xB102, 0x2ADE, 0x5C6A, 0x0D47, 0x7BF3, 0xE02F, 0x969B,
+    0xDD38, 0xAB8C, 0x3050, 0x46E4, 0x17C9, 0x617D, 0xFAA1, 0x8C15,
+    0x58FB, 0x2E4F, 0xB593, 0xC327, 0x920A, 0xE4BE, 0x7F62, 0x09D6,
+    0xC69F, 0xB02B, 0x2BF7, 0x5D43, 0x0C6E, 0x7ADA, 0xE106, 0x97B2,
+    0x435C, 0x35E8, 0xAE34, 0xD880, 0x89AD, 0xFF19, 0x64C5, 0x1271,
+    0xEA76, 0x9CC2, 0x071E, 0x71AA, 0x2087, 0x5633, 0xCDEF, 0xBB5B,
+    0x6FB5, 0x1901, 0x82DD, 0xF469, 0xA544, 0xD3F0, 0x482C, 0x3E98,
+    0xF1D1, 0x8765, 0x1CB9, 0x6A0D, 0x3B20, 0x4D94, 0xD648, 0xA0FC,
+    0x7412, 0x02A6, 0x997A, 0xEFCE, 0xBEE3, 0xC857, 0x538B, 0x253F,
+    0xB3A4, 0xC510, 0x5ECC, 0x2878, 0x7955, 0x0FE1, 0x943D, 0xE289,
+    0x3667, 0x40D3, 0xDB0F, 0xADBB, 0xFC96, 0x8A22, 0x11FE, 0x674A,
+    0xA803, 0xDEB7, 0x456B, 0x33DF, 0x62F2, 0x1446, 0x8F9A, 0xF92E,
+    0x2DC0, 0x5B74, 0xC0A8, 0xB61C, 0xE731, 0x9185, 0x0A59, 0x7CED,
+    0x84EA, 0xF25E, 0x6982, 0x1F36, 0x4E1B, 0x38AF, 0xA373, 0xD5C7,
+    0x0129, 0x779D, 0xEC41, 0x9AF5, 0xCBD8, 0xBD6C, 0x26B0, 0x5004,
+    0x9F4D, 0xE9F9, 0x7225, 0x0491, 0x55BC, 0x2308, 0xB8D4, 0xCE60,
+    0x1A8E, 0x6C3A, 0xF7E6, 0x8152, 0xD07F, 0xA6CB, 0x3D17, 0x4BA3
+},{
+    0x0000, 0xAA51, 0x4483, 0xEED2, 0x8906, 0x2357, 0xCD85, 0x67D4,
+    0x022D, 0xA87C, 0x46AE, 0xECFF, 0x8B2B, 0x217A, 0xCFA8, 0x65F9,
+    0x045A, 0xAE0B, 0x40D9, 0xEA88, 0x8D5C, 0x270D, 0xC9DF, 0x638E,
+    0x0677, 0xAC26, 0x42F4, 0xE8A5, 0x8F71, 0x2520, 0xCBF2, 0x61A3,
+    0x08B4, 0xA2E5, 0x4C37, 0xE666, 0x81B2, 0x2BE3, 0xC531, 0x6F60,
+    0x0A99, 0xA0C8, 0x4E1A, 0xE44B, 0x839F, 0x29CE, 0xC71C, 0x6D4D,
+    0x0CEE, 0xA6BF, 0x486D, 0xE23C, 0x85E8, 0x2FB9, 0xC16B, 0x6B3A,
+    0x0EC3, 0xA492, 0x4A40, 0xE011, 0x87C5, 0x2D94, 0xC346, 0x6917,
+    0x1168, 0xBB39, 0x55EB, 0xFFBA, 0x986E, 0x323F, 0xDCED, 0x76BC,
+    0x1345, 0xB914, 0x57C6, 0xFD97, 0x9A43, 0x3012, 0xDEC0, 0x7491,
+    0x1532, 0xBF63, 0x51B1, 0xFBE0, 0x9C34, 0x3665, 0xD8B7, 0x72E6,
+    0x171F, 0xBD4E, 0x539C, 0xF9CD, 0x9E19, 0x3448, 0xDA9A, 0x70CB,
+    0x19DC, 0xB38D, 0x5D5F, 0xF70E, 0x90DA, 0x3A8B, 0xD459, 0x7E08,
+    0x1BF1, 0xB1A0, 0x5F72, 0xF523, 0x92F7, 0x38A6, 0xD674, 0x7C25,
+    0x1D86, 0xB7D7, 0x5905, 0xF354, 0x9480, 0x3ED1, 0xD003, 0x7A52,
+    0x1FAB, 0xB5FA, 0x5B28, 0xF179, 0x96AD, 0x3CFC, 0xD22E, 0x787F,
+    0x22D0, 0x8881, 0x6653, 0xCC02, 0xABD6, 0x0187, 0xEF55, 0x4504,
+    0x20FD, 0x8AAC, 0x647E, 0xCE2F, 0xA9FB, 0x03AA, 0xED78, 0x4729,
+    0x268A, 0x8CDB, 0x6209, 0xC858, 0xAF8C, 0x05DD, 0xEB0F, 0x415E,
+    0x24A7, 0x8EF6, 0x6024, 0xCA75, 0xADA1, 0x07F0, 0xE922, 0x4373,
+    0x2A64, 0x8035, 0x6EE7, 0xC4B6, 0xA362, 0x0933, 0xE7E1, 0x4DB0,
+    0x2849, 0x8218, 0x6CCA, 0xC69B, 0xA14F, 0x0B1E, 0xE5CC, 0x4F9D,
+    0x2E3E, 0x846F, 0x6ABD, 0xC0EC, 0xA738, 0x0D69, 0xE3BB, 0x49EA,
+    0x2C13, 0x8642, 0x6890, 0xC2C1, 0xA515, 0x0F44, 0xE196, 0x4BC7,
+    0x33B8, 0x99E9, 0x773B, 0xDD6A, 0xBABE, 0x10EF, 0xFE3D, 0x546C,
+    0x3195, 0x9BC4, 0x7516, 0xDF47, 0xB893, 0x12C2, 0xFC10, 0x5641,
+    0x37E2, 0x9DB3, 0x7361, 0xD930, 0xBEE4, 0x14B5, 0xFA67, 0x5036,
+    0x35CF, 0x9F9E, 0x714C, 0xDB1D, 0xBCC9, 0x1698, 0xF84A, 0x521B,
+    0x3B0C, 0x915D, 0x7F8F, 0xD5DE, 0xB20A, 0x185B, 0xF689, 0x5CD8,
+    0x3921, 0x9370, 0x7DA2, 0xD7F3, 0xB027, 0x1A76, 0xF4A4, 0x5EF5,
+    0x3F56, 0x9507, 0x7BD5, 0xD184, 0xB650, 0x1C01, 0xF2D3, 0x5882,
+    0x3D7B, 0x972A, 0x79F8, 0xD3A9, 0xB47D, 0x1E2C, 0xF0FE, 0x5AAF
+},{
+    0x0000, 0x45A0, 0x8B40, 0xCEE0, 0x06A1, 0x4301, 0x8DE1, 0xC841,
+    0x0D42, 0x48E2, 0x8602, 0xC3A2, 0x0BE3, 0x4E43, 0x80A3, 0xC503,
+    0x1A84, 0x5F24, 0x91C4, 0xD464, 0x1C25, 0x5985, 0x9765, 0xD2C5,
+    0x17C6, 0x5266, 0x9C86, 0xD926, 0x1167, 0x54C7, 0x9A27, 0xDF87,
+    0x3508, 0x70A8, 0xBE48, 0xFBE8, 0x33A9, 0x7609, 0xB8E9, 0xFD49,
+    0x384A, 0x7DEA, 0xB30A, 0xF6AA, 0x3EEB, 0x7B4B, 0xB5AB, 0xF00B,
+    0x2F8C, 0x6A2C, 0xA4CC, 0xE16C, 0x292D, 0x6C8D, 0xA26D, 0xE7CD,
+    0x22CE, 0x676E, 0xA98E, 0xEC2E, 0x246F, 0x61CF, 0xAF2F, 0xEA8F,
+    0x6A10, 0x2FB0, 0xE150, 0xA4F0, 0x6CB1, 0x2911, 0xE7F1, 0xA251,
+    0x6752, 0x22F2, 0xEC12, 0xA9B2, 0x61F3, 0x2453, 0xEAB3, 0xAF13,
+    0x7094, 0x3534, 0xFBD4, 0xBE74, 0x7635, 0x3395, 0xFD75, 0xB8D5,
+    0x7DD6, 0x3876, 0xF696, 0xB336, 0x7B77, 0x3ED7, 0xF037, 0xB597,
+    0x5F18, 0x1AB8, 0xD458, 0x91F8, 0x59B9, 0x1C19, 0xD2F9, 0x9759,
+    0x525A, 0x17FA, 0xD91A, 0x9CBA, 0x54FB, 0x115B, 0xDFBB, 0x9A1B,
+    0x459C, 0x003C, 0xCEDC, 0x8B7C, 0x433D, 0x069D, 0xC87D, 0x8DDD,
+    0x48DE, 0x0D7E, 0xC39E, 0x863E, 0x4E7F, 0x0BDF, 0xC53F, 0x809F,
+    0xD420, 0x9180, 0x5F60, 0x1AC0, 0xD281, 0x9721, 0x59C1, 0x1C61,
+    0xD962, 0x9CC2, 0x5222, 0x1782, 0xDFC3, 0x9A63, 0x5483, 0x1123,
+    0xCEA4, 0x8B04, 0x45E4, 0x0044, 0xC805, 0x8DA5, 0x4345, 0x06E5,
+    0xC3E6, 0x8646, 0x48A6, 0x0D06, 0xC547, 0x80E7, 0x4E07, 0x0BA7,
+    0xE128, 0xA488, 0x6A68, 0x2FC8, 0xE789, 0xA229, 0x6CC9, 0x2969,
+    0xEC6A, 0xA9CA, 0x672A, 0x228A, 0xEACB, 0xAF6B, 0x618B, 0x242B,
+    0xFBAC, 0xBE0C, 0x70EC, 0x354C, 0xFD0D, 0xB8AD, 0x764D, 0x33ED,
+    0xF6EE, 0xB34E, 0x7DAE, 0x380E, 0xF04F, 0xB5EF, 0x7B0F, 0x3EAF,
+    0xBE30, 0xFB90, 0x3570, 0x70D0, 0xB891, 0xFD31, 0x33D1, 0x7671,
+    0xB372, 0xF6D2, 0x3832, 0x7D92, 0xB5D3, 0xF073, 0x3E93, 0x7B33,
+    0xA4B4, 0xE114, 0x2FF4, 0x6A54, 0xA215, 0xE7B5, 0x2955, 0x6CF5,
+    0xA9F6, 0xEC56, 0x22B6, 0x6716, 0xAF57, 0xEAF7, 0x2417, 0x61B7,
+    0x8B38, 0xCE98, 0x0078, 0x45D8, 0x8D99, 0xC839, 0x06D9, 0x4379,
+    0x867A, 0xC3DA, 0x0D3A, 0x489A, 0x80DB, 0xC57B, 0x0B9B, 0x4E3B,
+    0x91BC, 0xD41C, 0x1AFC, 0x5F5C, 0x971D, 0xD2BD, 0x1C5D, 0x59FD,
+    0x9CFE, 0xD95E, 0x17BE, 0x521E, 0x9A5F, 0xDFFF, 0x111F, 0x54BF
+},{
+    0x0000, 0xB861, 0x60E3, 0xD882, 0xC1C6, 0x79A7, 0xA125, 0x1944,
+    0x93AD, 0x2BCC, 0xF34E, 0x4B2F, 0x526B, 0xEA0A, 0x3288, 0x8AE9,
+    0x377B, 0x8F1A, 0x5798, 0xEFF9, 0xF6BD, 0x4EDC, 0x965E, 0x2E3F,
+    0xA4D6, 0x1CB7, 0xC435, 0x7C54, 0x6510, 0xDD71, 0x05F3, 0xBD92,
+    0x6EF6, 0xD697, 0x0E15, 0xB674, 0xAF30, 0x1751, 0xCFD3, 0x77B2,
+    0xFD5B, 0x453A, 0x9DB8, 0x25D9, 0x3C9D, 0x84FC, 0x5C7E, 0xE41F,
+    0x598D, 0xE1EC, 0x396E, 0x810F, 0x984B, 0x202A, 0xF8A8, 0x40C9,
+    0xCA20, 0x7241, 0xAAC3, 0x12A2, 0x0BE6, 0xB387, 0x6B05, 0xD364,
+    0xDDEC, 0x658D, 0xBD0F, 0x056E, 0x1C2A, 0xA44B, 0x7CC9, 0xC4A8,
+    0x4E41, 0xF620, 0x2EA2, 0x96C3, 0x8F87, 0x37E6, 0xEF64, 0x5705,
+    0xEA97, 0x52F6, 0x8A74, 0x3215, 0x2B51, 0x9330, 0x4BB2, 0xF3D3,
+    0x793A, 0xC15B, 0x19D9, 0xA1B8, 0xB8FC, 0x009D, 0xD81F, 0x607E,
+    0xB31A, 0x0B7B, 0xD3F9, 0x6B98, 0x72DC, 0xCABD, 0x123F, 0xAA5E,
+    0x20B7, 0x98D6, 0x4054, 0xF835, 0xE171, 0x5910, 0x8192, 0x39F3,
+    0x8461, 0x3C00, 0xE482, 0x5CE3, 0x45A7, 0xFDC6, 0x2544, 0x9D25,
+    0x17CC, 0xAFAD, 0x772F, 0xCF4E, 0xD60A, 0x6E6B, 0xB6E9, 0x0E88,
+    0xABF9, 0x1398, 0xCB1A, 0x737B, 0x6A3F, 0xD25E, 0x0ADC, 0xB2BD,
+    0x3854, 0x8035, 0x58B7, 0xE0D6, 0xF992, 0x41F3, 0x9971, 0x2110,
+    0x9C82, 0x24E3, 0xFC61, 0x4400, 0x5D44, 0xE525, 0x3DA7, 0x85C6,
+    0x0F2F, 0xB74E, 0x6FCC, 0xD7AD, 0xCEE9, 0x7688, 0xAE0A, 0x166B,
+    0xC50F, 0x7D6E, 0xA5EC, 0x1D8D, 0x04C9, 0xBCA8, 0x642A, 0xDC4B,
+    0x56A2, 0xEEC3, 0x3641, 0x8E20, 0x9764, 0x2F05, 0xF787, 0x4FE6,
+    0xF274, 0x4A15, 0x9297, 0x2AF6, 0x33B2, 0x8BD3, 0x5351, 0xEB30,
+    0x61D9, 0xD9B8, 0x013A, 0xB95B, 0xA01F, 0x187E, 0xC0FC, 0x789D,
+    0x7615, 0xCE74, 0x16F6, 0xAE97, 0xB7D3, 0x0FB2, 0xD730, 0x6F51,
+    0xE5B8, 0x5DD9, 0x855B, 0x3D3A, 0x247E, 0x9C1F, 0x449D, 0xFCFC,
+    0x416E, 0xF90F, 0x218D, 0x99EC, 0x80A8, 0x38C9, 0xE04B, 0x582A,
+    0xD2C3, 0x6AA2, 0xB220, 0x0A41, 0x1305, 0xAB64, 0x73E6, 0xCB87,
+    0x18E3, 0xA082, 0x7800, 0xC061, 0xD925, 0x6144, 0xB9C6, 0x01A7,
+    0x8B4E, 0x332F, 0xEBAD, 0x53CC, 0x4A88, 0xF2E9, 0x2A6B, 0x920A,
+    0x2F98, 0x97F9, 0x4F7B, 0xF71A, 0xEE5E, 0x563F, 0x8EBD, 0x36DC,
+    0xBC35, 0x0454, 0xDCD6, 0x64B7, 0x7DF3, 0xC592, 0x1D10, 0xA571
+},{
+    0x0000, 0x47D3, 0x8FA6, 0xC875, 0x0F6D, 0x48BE, 0x80CB, 0xC718,
+    0x1EDA, 0x5909, 0x917C, 0xD6AF, 0x11B7, 0x5664, 0x9E11, 0xD9C2,
+    0x3DB4, 0x7A67, 0xB212, 0xF5C1, 0x32D9, 0x750A, 0xBD7F, 0xFAAC,
+    0x236E, 0x64BD, 0xACC8, 0xEB1B, 0x2C03, 0x6BD0, 0xA3A5, 0xE476,
+    0x7B68, 0x3CBB, 0xF4CE, 0xB31D, 0x7405, 0x33D6, 0xFBA3, 0xBC70,
+    0x65B2, 0x2261, 0xEA14, 0xADC7, 0x6ADF, 0x2D0C, 0xE579, 0xA2AA,
+    0x46DC, 0x010F, 0xC97A, 0x8EA9, 0x49B1, 0x0E62, 0xC617, 0x81C4,
+    0x5806, 0x1FD5, 0xD7A0, 0x9073, 0x576B, 0x10B8, 0xD8CD, 0x9F1E,
+    0xF6D0, 0xB103, 0x7976, 0x3EA5, 0xF9BD, 0xBE6E, 0x761B, 0x31C8,
+    0xE80A, 0xAFD9, 0x67AC, 0x207F, 0xE767, 0xA0B4, 0x68C1, 0x2F12,
+    0xCB64, 0x8CB7, 0x44C2, 0x0311, 0xC409, 0x83DA, 0x4BAF, 0x0C7C,
+    0xD5BE, 0x926D, 0x5A18, 0x1DCB, 0xDAD3, 0x9D00, 0x5575, 0x12A6,
+    0x8DB8, 0xCA6B, 0x021E, 0x45CD, 0x82D5, 0xC506, 0x0D73, 0x4AA0,
+    0x9362, 0xD4B1, 0x1CC4, 0x5B17, 0x9C0F, 0xDBDC, 0x13A9, 0x547A,
+    0xB00C, 0xF7DF, 0x3FAA, 0x7879, 0xBF61, 0xF8B2, 0x30C7, 0x7714,
+    0xAED6, 0xE905, 0x2170, 0x66A3, 0xA1BB, 0xE668, 0x2E1D, 0x69CE,
+    0xFD81, 0xBA52, 0x7227, 0x35F4, 0xF2EC, 0xB53F, 0x7D4A, 0x3A99,
+    0xE35B, 0xA488, 0x6CFD, 0x2B2E, 0xEC36, 0xABE5, 0x6390, 0x2443,
+    0xC035, 0x87E6, 0x4F93, 0x0840, 0xCF58, 0x888B, 0x40FE, 0x072D,
+    0xDEEF, 0x993C, 0x5149, 0x169A, 0xD182, 0x9651, 0x5E24, 0x19F7,
+    0x86E9, 0xC13A, 0x094F, 0x4E9C, 0x8984, 0xCE57, 0x0622, 0x41F1,
+    0x9833, 0xDFE0, 0x1795, 0x5046, 0x975E, 0xD08D, 0x18F8, 0x5F2B,
+    0xBB5D, 0xFC8E, 0x34FB, 0x7328, 0xB430, 0xF3E3, 0x3B96, 0x7C45,
+    0xA587, 0xE254, 0x2A21, 0x6DF2, 0xAAEA, 0xED39, 0x254C, 0x629F,
+    0x0B51, 0x4C82, 0x84F7, 0xC324, 0x043C, 0x43EF, 0x8B9A, 0xCC49,
+    0x158B, 0x5258, 0x9A2D, 0xDDFE, 0x1AE6, 0x5D35, 0x9540, 0xD293,
+    0x36E5, 0x7136, 0xB943, 0xFE90, 0x3988, 0x7E5B, 0xB62E, 0xF1FD,
+    0x283F, 0x6FEC, 0xA799, 0xE04A, 0x2752, 0x6081, 0xA8F4, 0xEF27,
+    0x7039, 0x37EA, 0xFF9F, 0xB84C, 0x7F54, 0x3887, 0xF0F2, 0xB721,
+    0x6EE3, 0x2930, 0xE145, 0xA696, 0x618E, 0x265D, 0xEE28, 0xA9FB,
+    0x4D8D, 0x0A5E, 0xC22B, 0x85F8, 0x42E0, 0x0533, 0xCD46, 0x8A95,
+    0x5357, 0x1484, 0xDCF1, 0x9B22, 0x5C3A, 0x1BE9, 0xD39C, 0x944F
+}};
 
 /* Non - Reflected */
-uint16_t util_crc16(uint16_t current, const char *k, size_t len) {
+uint16_t util_crc16(uint16_t current, const char *GMQCC_RESTRICT k, size_t len) {
     register uint16_t h = current;
-    for (; len; --len, ++k)
-        h = util_crc16_table[(h>>8)^((unsigned char)*k)]^(h<<8);
+
+    /* don't load twice */
+    const uint8_t *GMQCC_RESTRICT data = (const uint8_t *GMQCC_RESTRICT)k;
+    size_t n;
+
+    /* deal with the first bytes as bytes until we reach an 8 byte boundary */
+    while (len & 7) {
+        h = (uint16_t)(h << 8) ^ (*util_crc16_table)[(h >> 8) ^ *data++];
+        --len;
+    }
+
+    #define SELECT_BULK(X, MOD) util_crc16_table[(X)][data[7-(X)] ^ (MOD)]
+    #define SELECT_DATA(X)      util_crc16_table[(X)][data[7-(X)]]
+
+    for (n = len / 8; n; --n) {
+        h = SELECT_BULK(7, (h >> 8))   ^
+            SELECT_BULK(6, (h & 0xFF)) ^
+            SELECT_DATA(5) ^
+            SELECT_DATA(4) ^
+            SELECT_DATA(3) ^
+            SELECT_DATA(2) ^
+            SELECT_DATA(1) ^
+            SELECT_DATA(0);
+        data += 8;
+        len  -= 8;
+    }
+
+    #undef SELECT_BULK
+    #undef SELECT_DATA
+
+    /* deal with the rest with the byte method */
+    for (n = len & 7; n; --n)
+        h = (uint16_t)(h << 8) ^ (*util_crc16_table)[(h >> 8) ^ *data++];
+
     return h;
 }
-/* Reflective Variation (for reference) */
-#if 0
-uint16_t util_crc16(const char *k, int len, const short clamp) {
-    register uint16_t h= (uint16_t)0xFFFFFFFF;
-    for (; len; --len, ++k)
-        h = util_crc16_table[(h^((unsigned char)*k))&0xFF]^(h>>8);
-    return (~h)%clamp;
-}
-#endif
 
 /*
  * modifier is the match to make and the transposition from it, while add is the upper-value that determines the
  * transposition from uppercase to lower case.
  */
-static GMQCC_INLINE size_t util_strtransform(const char *in, char *out, size_t outsz, const char *mod, int add) {
+static size_t util_strtransform(const char *in, char *out, size_t outsz, const char *mod, int add) {
     size_t sz = 1;
     for (; *in && sz < outsz; ++in, ++out, ++sz) {
         *out = (*in == mod[0])