comparison bn_mp_fwrite.c @ 1:22d5cf7d4b1a libtommath

Renaming branch
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:23:46 +0000
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children d29b64170cf0
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-1:000000000000 1:22d5cf7d4b1a
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 *
3 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality.
5 *
6 * The library was designed directly after the MPI library by
7 * Michael Fromberger but has been written from scratch with
8 * additional optimizations in place.
9 *
10 * The library is free for all purposes without any express
11 * guarantee it works.
12 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */
15 #include <tommath.h>
16
17 int mp_fwrite(mp_int *a, int radix, FILE *stream)
18 {
19 char *buf;
20 int err, len, x;
21
22 if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
23 return err;
24 }
25
26 buf = OPT_CAST(char) XMALLOC (len);
27 if (buf == NULL) {
28 return MP_MEM;
29 }
30
31 if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
32 XFREE (buf);
33 return err;
34 }
35
36 for (x = 0; x < len; x++) {
37 if (fputc(buf[x], stream) == EOF) {
38 XFREE (buf);
39 return MP_VAL;
40 }
41 }
42
43 XFREE (buf);
44 return MP_OKAY;
45 }
46