bn_mp_jacobi.c

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Author : Daniel Mendler
Date : 2019-05-13 00:22:18
Hash : 4534056c
Message : 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

bn_mp_jacobi.c

#include "tommath_private.h"
#ifdef BN_MP_JACOBI_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

/* computes the jacobi c = (a | n) (or Legendre if n is prime)
 * Kept for legacy reasons, please use mp_kronecker() instead
 */
mp_err mp_jacobi(const mp_int *a, const mp_int *n, int *c)
{
   /* if a < 0 return MP_VAL */
   if (a->sign == MP_NEG) {
      return MP_VAL;
   }

   /* if n <= 0 return MP_VAL */
   if (mp_cmp_d(n, 0uL) != MP_GT) {
      return MP_VAL;
   }

   return mp_kronecker(a, n, c);
}
#endif

kc3-lang/libtommath/bn_mp_jacobi.c

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