kc3-lang/libtommath/mp_neg.c

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• Hash : 3cdcec43
  Author :
  Date : 2019-10-29T18:41:25
  

  first batch of simplifications

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• mp_neg.c

• #include "tommath_private.h"
  #ifdef MP_NEG_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  /* b = -a */
  mp_err mp_neg(const mp_int *a, mp_int *b)
  {
     if (a != b) {
        mp_err err;
        if ((err = mp_copy(a, b)) != MP_OKAY) {
           return err;
        }
     }
  
     b->sign = mp_iszero(b) || b->sign == MP_NEG ? MP_ZPOS : MP_NEG;
  
     return MP_OKAY;
  }
  #endif
  

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