38 lines
713 B
C
38 lines
713 B
C
#include "tommath_private.h"
|
|
#ifdef MP_LOG_U32_C
|
|
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
|
|
/* SPDX-License-Identifier: Unlicense */
|
|
|
|
mp_err mp_log_u32(const mp_int *a, uint32_t base, uint32_t *c)
|
|
{
|
|
if (a->sign == MP_NEG) {
|
|
return MP_VAL;
|
|
}
|
|
|
|
if (mp_iszero(a)) {
|
|
return MP_VAL;
|
|
}
|
|
|
|
if (base < 2u) {
|
|
return MP_VAL;
|
|
}
|
|
|
|
if (MP_HAS(S_MP_LOG_POW2) && MP_IS_2EXPT(base)) {
|
|
*c = s_mp_log_pow2(a, base);
|
|
return MP_OKAY;
|
|
}
|
|
|
|
if (MP_HAS(S_MP_LOG_D) && (a->used == 1)) {
|
|
*c = (uint32_t)s_mp_log_d(base, a->dp[0]);
|
|
return MP_OKAY;
|
|
}
|
|
|
|
if (MP_HAS(S_MP_LOG)) {
|
|
return s_mp_log(a, base, c);
|
|
}
|
|
|
|
return MP_VAL;
|
|
}
|
|
|
|
#endif
|