libtommath/bn_mp_fwrite.c
Francois Perrad f1d6c88759 refactor cast
2017-10-15 19:58:35 +02:00

55 lines
1.2 KiB
C

#include <tommath_private.h>
#ifdef BN_MP_FWRITE_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis
*
* LibTomMath is a library that provides multiple-precision
* integer arithmetic as well as number theoretic functionality.
*
* The library was designed directly after the MPI library by
* Michael Fromberger but has been written from scratch with
* additional optimizations in place.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tstdenis82@gmail.com, http://libtom.org
*/
#ifndef LTM_NO_FILE
int mp_fwrite(const mp_int *a, int radix, FILE *stream)
{
char *buf;
int err, len, x;
if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
return err;
}
buf = OPT_CAST(char) XMALLOC((size_t)len);
if (buf == NULL) {
return MP_MEM;
}
if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
XFREE(buf);
return err;
}
for (x = 0; x < len; x++) {
if (fputc((int)buf[x], stream) == EOF) {
XFREE(buf);
return MP_VAL;
}
}
XFREE(buf);
return MP_OKAY;
}
#endif
#endif
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */