libtommath/bn_mp_complement.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

13 lines
325 B
C

#include "tommath_private.h"
#ifdef BN_MP_COMPLEMENT_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
/* b = ~a */
mp_err mp_complement(const mp_int *a, mp_int *b)
{
mp_err res = mp_neg(a, b);
return (res == MP_OKAY) ? mp_sub_d(b, 1uL, b) : res;
}
#endif