Mercurial > dropbear

annotate libtommath/bn_mp_fwrite.c @ 1646:6d1bbe7d5fa5 DROPBEAR_2019.77

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2019.77
author Matt Johnston <matt@ucc.asn.au>
date Sat, 23 Mar 2019 21:46:29 +0800
parents 8bba51a55704
children f52919ffd3b1
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1 #include <tommath_private.h>
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2 #ifdef BN_MP_FWRITE_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * The library is free for all purposes without any express
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13 * guarantee it works.
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14 *
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15 * Tom St Denis, [email protected], http://libtom.org
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16 */
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17
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18 #ifndef LTM_NO_FILE
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19 int mp_fwrite(mp_int *a, int radix, FILE *stream)
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20 {
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21 char *buf;
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22 int err, len, x;
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23
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24 if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
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25 return err;
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26 }
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28 buf = OPT_CAST(char) XMALLOC (len);
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29 if (buf == NULL) {
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30 return MP_MEM;
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31 }
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33 if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
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34 XFREE (buf);
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35 return err;
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36 }
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38 for (x = 0; x < len; x++) {
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39 if (fputc(buf[x], stream) == EOF) {
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40 XFREE (buf);
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41 return MP_VAL;
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42 }
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43 }
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45 XFREE (buf);
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46 return MP_OKAY;
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47 }
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48 #endif
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50 #endif
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51
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52 /* ref: $Format:%D$ */
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53 /* git commit: $Format:%H$ */
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54 /* commit time: $Format:%ai$ */