X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=d0_bignum.h;h=7128eaed85fb034d568992c76e0807c35a037ff4;hb=0d9c60c64a7628d79882fd8ceb8d3aafc3548688;hp=7eb0e0ab523ba27a5bb6a9356d580e35748bd961;hpb=b38fa6331d39d835a284697bd1c0906b3326d18e;p=xonotic%2Fd0_blind_id.git

diff --git a/d0_bignum.h b/d0_bignum.h
index 7eb0e0a..7128eae 100644
--- a/d0_bignum.h
+++ b/d0_bignum.h
@@ -1,15 +1,55 @@
+/*
+ * FILE:	d0_bignum.h
+ * AUTHOR:	Rudolf Polzer - divVerent@xonotic.org
+ * 
+ * Copyright (c) 2010, Rudolf Polzer
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Format:commit %H$
+ * $Id$
+ */
+
+#ifndef __D0_BIGNUM_H__
+#define __D0_BIGNUM_H__
+
 #include "d0.h"
 #include "d0_iobuf.h"
 
 typedef struct d0_bignum_s d0_bignum_t;
 
-WARN_UNUSED_RESULT BOOL d0_iobuf_write_bignum(d0_iobuf_t *buf, const d0_bignum_t *bignum);
+WARN_UNUSED_RESULT BOOL d0_iobuf_write_bignum(d0_iobuf_t *buf, const d0_bignum_t *bignum); // byte 0: 01=+ 11=- 00=0, rest = big endian number
 WARN_UNUSED_RESULT d0_bignum_t *d0_iobuf_read_bignum(d0_iobuf_t *buf, d0_bignum_t *bignum);
+WARN_UNUSED_RESULT ssize_t d0_bignum_export_unsigned(const d0_bignum_t *bignum, void *buf, size_t bufsize); // big endian, return value = number of significant bytes (or -1 on error)
+WARN_UNUSED_RESULT d0_bignum_t *d0_bignum_import_unsigned(d0_bignum_t *bignum, const void *buf, size_t bufsize);
 
-void d0_bignum_INITIALIZE();
-void d0_bignum_SHUTDOWN();
+WARN_UNUSED_RESULT BOOL d0_bignum_INITIALIZE(void);
+void d0_bignum_SHUTDOWN(void);
 
-WARN_UNUSED_RESULT d0_bignum_t *d0_bignum_new();
+WARN_UNUSED_RESULT d0_bignum_t *d0_bignum_new(void);
 void d0_bignum_free(d0_bignum_t *a);
 void d0_bignum_init(d0_bignum_t *b);
 void d0_bignum_clear(d0_bignum_t *a);
@@ -36,3 +76,5 @@ WARN_UNUSED_RESULT int d0_bignum_isprime(d0_bignum_t *r, int param);
 WARN_UNUSED_RESULT d0_bignum_t *d0_bignum_gcd(d0_bignum_t *r, d0_bignum_t *s, d0_bignum_t *t, const d0_bignum_t *a, const d0_bignum_t *b);
 
 WARN_UNUSED_RESULT char *d0_bignum_tostring(const d0_bignum_t *x, unsigned int base); // allocates!
+
+#endif