2 #ifdef BN_MP_REDUCE_IS_2K_L_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
12 * The library is free for all purposes without any express
15 * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
18 /* determines if reduce_2k_l can be used */
19 int mp_reduce_is_2k_l(mp_int *a)
25 } else if (a->used == 1) {
27 } else if (a->used > 1) {
28 /* if more than half of the digits are -1 we're sold */
29 for (iy = ix = 0; ix < a->used; ix++) {
30 if (a->dp[ix] == MP_MASK) {
34 return (iy >= (a->used/2)) ? MP_YES : MP_NO;