libtommath/bn_mp_init_size.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

25 lines
536 B
C

#include "tommath_private.h"
#ifdef BN_MP_INIT_SIZE_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
/* init an mp_init for a given size */
mp_err mp_init_size(mp_int *a, int size)
{
size = MP_MAX(MP_MIN_PREC, size);
/* alloc mem */
a->dp = (mp_digit *) MP_CALLOC((size_t)size, sizeof(mp_digit));
if (a->dp == NULL) {
return MP_MEM;
}
/* set the members */
a->used = 0;
a->alloc = size;
a->sign = MP_ZPOS;
return MP_OKAY;
}
#endif