Mercurial > dropbear
view libtommath/bn_mp_sqr.c @ 1692:1051e4eea25a
Update LibTomMath to 1.2.0 (#84)
* update C files
* update other files
* update headers
* update makefiles
* remove mp_set/get_double()
* use ltm 1.2.0 API
* update ltm_desc
* use bundled tommath if system-tommath is too old
* XMALLOC etc. were changed to MP_MALLOC etc.
author | Steffen Jaeckel <s@jaeckel.eu> |
---|---|
date | Tue, 26 May 2020 17:36:47 +0200 |
parents | f52919ffd3b1 |
children |
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#include "tommath_private.h" #ifdef BN_MP_SQR_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* computes b = a*a */ mp_err mp_sqr(const mp_int *a, mp_int *b) { mp_err err; if (MP_HAS(S_MP_TOOM_SQR) && /* use Toom-Cook? */ (a->used >= MP_TOOM_SQR_CUTOFF)) { err = s_mp_toom_sqr(a, b); } else if (MP_HAS(S_MP_KARATSUBA_SQR) && /* Karatsuba? */ (a->used >= MP_KARATSUBA_SQR_CUTOFF)) { err = s_mp_karatsuba_sqr(a, b); } else if (MP_HAS(S_MP_SQR_FAST) && /* can we use the fast comba multiplier? */ (((a->used * 2) + 1) < MP_WARRAY) && (a->used < (MP_MAXFAST / 2))) { err = s_mp_sqr_fast(a, b); } else if (MP_HAS(S_MP_SQR)) { err = s_mp_sqr(a, b); } else { err = MP_VAL; } b->sign = MP_ZPOS; return err; } #endif