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@gmail.com, http://math.libtomcrypt.com
18 /* computes b = a*a */
20 mp_sqr (mp_int * a, mp_int * b)
24 #ifdef BN_MP_TOOM_SQR_C
26 if (a->used >= TOOM_SQR_CUTOFF) {
27 res = mp_toom_sqr(a, b);
31 #ifdef BN_MP_KARATSUBA_SQR_C
32 if (a->used >= KARATSUBA_SQR_CUTOFF) {
33 res = mp_karatsuba_sqr (a, b);
37 #ifdef BN_FAST_S_MP_SQR_C
38 /* can we use the fast comba multiplier? */
39 if ((a->used * 2 + 1) < MP_WARRAY &&
41 (1 << (sizeof(mp_word) * CHAR_BIT - 2*DIGIT_BIT - 1))) {
42 res = fast_s_mp_sqr (a, b);
46 res = s_mp_sqr (a, b);
56 /* $Source: /cvs/libtom/libtommath/bn_mp_sqr.c,v $ */
57 /* $Revision: 1.3 $ */
58 /* $Date: 2006/03/31 14:18:44 $ */