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- #include <tommath.h>
- #ifdef BN_MP_REDUCE_2K_SETUP_L_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.
- *
- * The library is free for all purposes without any express
- * guarantee it works.
- *
- * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
- */
- /* determines the setup value */
- int mp_reduce_2k_setup_l(mp_int *a, mp_int *d)
- {
- int res;
- mp_int tmp;
-
- if ((res = mp_init(&tmp)) != MP_OKAY) {
- return res;
- }
-
- if ((res = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) {
- goto ERR;
- }
-
- if ((res = s_mp_sub(&tmp, a, d)) != MP_OKAY) {
- goto ERR;
- }
-
- ERR:
- mp_clear(&tmp);
- return res;
- }
- #endif
- /* $Source: /cvs/libtom/libtommath/bn_mp_reduce_2k_setup_l.c,v $ */
- /* $Revision: 1.3 $ */
- /* $Date: 2006/03/31 14:18:44 $ */
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