38 lines
1009 B
C
38 lines
1009 B
C
#include "tommath_private.h"
|
|
#ifdef BN_MP_JACOBI_C
|
|
/* LibTomMath, multiple-precision integer library -- Tom St Denis
|
|
*
|
|
* LibTomMath is a library that provides multiple-precision
|
|
* integer arithmetic as well as number theoretic functionality.
|
|
*
|
|
* The library was designed directly after the MPI library by
|
|
* Michael Fromberger but has been written from scratch with
|
|
* additional optimizations in place.
|
|
*
|
|
* The library is free for all purposes without any express
|
|
* guarantee it works.
|
|
*/
|
|
|
|
/* computes the jacobi c = (a | n) (or Legendre if n is prime)
|
|
* Kept for legacy reasons, please use mp_kronecker() instead
|
|
*/
|
|
int mp_jacobi(const mp_int *a, const mp_int *n, int *c)
|
|
{
|
|
/* if a < 0 return MP_VAL */
|
|
if (mp_isneg(a) == MP_YES) {
|
|
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
|
|
|
|
/* ref: $Format:%D$ */
|
|
/* git commit: $Format:%H$ */
|
|
/* commit time: $Format:%ai$ */
|