diff options
Diffstat (limited to 'libtommath/bn_mp_tc_and.c')
-rw-r--r-- | libtommath/bn_mp_tc_and.c | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/libtommath/bn_mp_tc_and.c b/libtommath/bn_mp_tc_and.c deleted file mode 100644 index 6b59023..0000000 --- a/libtommath/bn_mp_tc_and.c +++ /dev/null @@ -1,90 +0,0 @@ -#include "tommath_private.h" -#ifdef BN_MP_TC_AND_C -/* LibTomMath, multiple-precision integer library -- Tom St Denis - * - * LibTomMath is a library that provides multiple-precision - * integer arithmetic as well as number theoretic functionality. - * - * The library was designed directly after the MPI library by - * Michael Fromberger but has been written from scratch with - * additional optimizations in place. - * - * SPDX-License-Identifier: Unlicense - */ - -/* two complement and */ -int mp_tc_and(const mp_int *a, const mp_int *b, mp_int *c) -{ - int res = MP_OKAY, bits, abits, bbits; - int as = mp_isneg(a), bs = mp_isneg(b); - mp_int *mx = NULL, _mx, acpy, bcpy; - - if ((as != MP_NO) || (bs != MP_NO)) { - abits = mp_count_bits(a); - bbits = mp_count_bits(b); - bits = MAX(abits, bbits); - res = mp_init_set_int(&_mx, 1uL); - if (res != MP_OKAY) { - goto end; - } - - mx = &_mx; - res = mp_mul_2d(mx, bits + 1, mx); - if (res != MP_OKAY) { - goto end; - } - - if (as != MP_NO) { - res = mp_init(&acpy); - if (res != MP_OKAY) { - goto end; - } - - res = mp_add(mx, a, &acpy); - if (res != MP_OKAY) { - mp_clear(&acpy); - goto end; - } - a = &acpy; - } - if (bs != MP_NO) { - res = mp_init(&bcpy); - if (res != MP_OKAY) { - goto end; - } - - res = mp_add(mx, b, &bcpy); - if (res != MP_OKAY) { - mp_clear(&bcpy); - goto end; - } - b = &bcpy; - } - } - - res = mp_and(a, b, c); - - if ((as != MP_NO) && (bs != MP_NO) && (res == MP_OKAY)) { - res = mp_sub(c, mx, c); - } - -end: - if (a == &acpy) { - mp_clear(&acpy); - } - - if (b == &bcpy) { - mp_clear(&bcpy); - } - - if (mx == &_mx) { - mp_clear(mx); - } - - return res; -} -#endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */ |