mp_init_copy.c

   1 #include "tommath_private.h"
   2 #ifdef MP_INIT_COPY_C
   3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
   4 /* SPDX-License-Identifier: Unlicense */
   5
   6 /* creates "a" then copies b into it */
   7 mp_err mp_init_copy(mp_int *a, const mp_int *b)
   8 {
   9    mp_err     err;
  10
  11    if ((err = mp_init_size(a, b->used)) != MP_OKAY) {
  12       return err;
  13    }
  14
  15    if ((err = mp_copy(b, a)) != MP_OKAY) {
  16       mp_clear(a);
  17    }
  18
  19    return err;
  20 }
  21 #endif