libtommath/bn_mp_fwrite.c
Daniel Mendler 4534056c28
use enums mp_err, mp_ord, mp_bool, mp_sign
* MP_USE_ENUMS enables enums
* Wc++-compat catches some implicit conversions if MP_USE_ENUMS is defined
* 100% backwards compatible API/ABI if MP_USE_ENUMS is not defined
2019-05-13 19:15:14 +02:00

38 lines
768 B
C

#include "tommath_private.h"
#ifdef BN_MP_FWRITE_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#ifndef MP_NO_FILE
mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream)
{
char *buf;
mp_err err;
int len;
if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
return err;
}
buf = (char *) MP_MALLOC((size_t)len);
if (buf == NULL) {
return MP_MEM;
}
if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
MP_FREE_BUFFER(buf, (size_t)len);
return err;
}
if (fwrite(buf, (size_t)len, 1, stream) != 1) {
MP_FREE_BUFFER(buf, (size_t)len);
return MP_ERR;
}
MP_FREE_BUFFER(buf, (size_t)len);
return MP_OKAY;
}
#endif
#endif