s_mp_log_2expt.c

   1 #include "tommath_private.h"
   2 #ifdef S_MP_LOG_2EXPT_C
   3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
   4 /* SPDX-License-Identifier: Unlicense */
   5
   6 int s_mp_log_2expt(const mp_int *a, mp_digit base)
   7 {
   8    int y;
   9    for (y = 0; (base & 1) == 0; y++, base >>= 1) {}
  10    return (mp_count_bits(a) - 1) / y;
  11 }
  12 #endif