return (a.x && a.y && a.z);
}
+static GMQCC_INLINE vec3_t vec3_cross(vec3_t a, vec3_t b) {
+ vec3_t out;
+ out.x = a.y * b.z - a.z * b.y;
+ out.y = a.z * b.x - a.x * b.z;
+ out.z = a.x * b.y - a.y * b.x;
+ return out;
+}
+
static lex_ctx_t fold_ctx(fold_t *fold) {
lex_ctx_t ctx;
if (fold->parser->lex)
((ast_expression*)(X))->vtype != TYPE_FUNCTION)
#define fold_can_2(X, Y) (fold_can_1(X) && fold_can_1(Y))
+#define fold_can_div(X) (fold_immvalue_float(X) != 0.0f)
#define fold_immvalue_float(E) ((E)->constval.vfloat)
#define fold_immvalue_vector(E) ((E)->constval.vvec)
#define fold_immvalue_string(E) ((E)->constval.vstring)
+#ifdef INFINITY
+# define fold_infinity_float INFINITY
+#else
+# define fold_infinity_float (1.0 / 0.0)
+#endif /*! INFINITY */
+
+#define fold_infinity_vector \
+ vec3_create( \
+ fold_infinity_float, \
+ fold_infinity_float, \
+ fold_infinity_float \
+ )
+
fold_t *fold_init(parser_t *parser) {
fold_t *fold = (fold_t*)mem_a(sizeof(fold_t));
fold->parser = 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, fold_infinity_float); /* +inf */
(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));
+ (void)fold_constgen_vector(fold, fold_infinity_vector); /* +inf */
return fold;
}
out = (ast_expression*)ast_member_new(fold_ctx(fold), (ast_expression*)sel, set[0]-'x', NULL);
out->node.keep = false;
((ast_member*)out)->rvalue = true;
- if (x != -1)
+ if (x != -1.0f)
return (ast_expression*)ast_binary_new(fold_ctx(fold), INSTR_MUL_F, fold_constgen_float(fold, x), out);
}
return NULL;
static GMQCC_INLINE ast_expression *fold_op_div(fold_t *fold, ast_value *a, ast_value *b) {
if (isfloat(a)) {
- if (fold_can_2(a, b))
- return fold_constgen_float(fold, fold_immvalue_float(a) / fold_immvalue_float(b));
+ if (fold_can_2(a, b)) {
+ if (fold_can_div(b))
+ return fold_constgen_float(fold, fold_immvalue_float(a) / fold_immvalue_float(b));
+ else
+ return (ast_expression*)fold->imm_float[3]; /* inf */
+ } else if (fold_can_1(b)) {
+ return (ast_expression*)ast_binary_new(
+ fold_ctx(fold),
+ INSTR_MUL_F,
+ (ast_expression*)a,
+ fold_constgen_float(fold, 1.0f / fold_immvalue_float(b))
+ );
+ }
} else if (isvector(a)) {
- if (fold_can_2(a, b))
- return fold_constgen_vector(fold, vec3_mulvf(fold_immvalue_vector(a), 1.0f / fold_immvalue_float(b)));
- else {
+ if (fold_can_2(a, b)) {
+ if (fold_can_div(b)) {
+ printf("hit wrong logic\n");
+ return fold_constgen_vector(fold, vec3_mulvf(fold_immvalue_vector(a), 1.0f / fold_immvalue_float(b)));
+ }
+ else {
+ printf("hit logic\n");
+ return (ast_expression*)fold->imm_vector[2]; /* inf */
+ }
+ } else {
return (ast_expression*)ast_binary_new(
fold_ctx(fold),
INSTR_MUL_VF,
}
static GMQCC_INLINE ast_expression *fold_op_mod(fold_t *fold, ast_value *a, ast_value *b) {
- 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))));
+ if (fold_can_2(a, b)) {
+ if (fold_can_div(b))
+ return fold_constgen_float(fold, (qcfloat_t)(((qcint_t)fold_immvalue_float(a)) % ((qcint_t)fold_immvalue_float(b))));
+ else
+ return (ast_expression*)fold->imm_float[3]; /* inf */
+ }
return NULL;
}
return NULL;
}
+static GMQCC_INLINE ast_expression *fold_op_cross(fold_t *fold, ast_value *a, ast_value *b) {
+ if (fold_can_2(a, b))
+ return fold_constgen_vector(fold, vec3_cross(fold_immvalue_vector(a), fold_immvalue_vector(b)));
+ return NULL;
+}
+
ast_expression *fold_op(fold_t *fold, const oper_info *info, ast_expression **opexprs) {
ast_value *a = (ast_value*)opexprs[0];
ast_value *b = (ast_value*)opexprs[1];
fold_op_case(2, ('!', '='), cmp, (fold, a, b, true));
fold_op_case(2, ('=', '='), cmp, (fold, a, b, false));
fold_op_case(2, ('~', 'P'), bnot, (fold, a));
+ fold_op_case(2, ('>', '<'), cross, (fold, a, b));
}
#undef fold_op_case
compile_error(fold_ctx(fold), "internal error: attempted to constant-fold for unsupported operator");