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-rw-r--r--tcl8.6/libtommath/bn_mp_mul.c62
1 files changed, 0 insertions, 62 deletions
diff --git a/tcl8.6/libtommath/bn_mp_mul.c b/tcl8.6/libtommath/bn_mp_mul.c
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index fc024be..0000000
--- a/tcl8.6/libtommath/bn_mp_mul.c
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-#include <tommath.h>
-#ifdef BN_MP_MUL_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
- */
-
-/* high level multiplication (handles sign) */
-int mp_mul (mp_int * a, mp_int * b, mp_int * c)
-{
- int res, neg;
- neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG;
-
- /* use Toom-Cook? */
-#ifdef BN_MP_TOOM_MUL_C
- if (MIN (a->used, b->used) >= TOOM_MUL_CUTOFF) {
- res = mp_toom_mul(a, b, c);
- } else
-#endif
-#ifdef BN_MP_KARATSUBA_MUL_C
- /* use Karatsuba? */
- if (MIN (a->used, b->used) >= KARATSUBA_MUL_CUTOFF) {
- res = mp_karatsuba_mul (a, b, c);
- } else
-#endif
- {
- /* can we use the fast multiplier?
- *
- * The fast multiplier can be used if the output will
- * have less than MP_WARRAY digits and the number of
- * digits won't affect carry propagation
- */
- int digs = a->used + b->used + 1;
-
-#ifdef BN_FAST_S_MP_MUL_DIGS_C
- if ((digs < MP_WARRAY) &&
- MIN(a->used, b->used) <=
- (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) {
- res = fast_s_mp_mul_digs (a, b, c, digs);
- } else
-#endif
-#ifdef BN_S_MP_MUL_DIGS_C
- res = s_mp_mul (a, b, c); /* uses s_mp_mul_digs */
-#else
- res = MP_VAL;
-#endif
-
- }
- c->sign = (c->used > 0) ? neg : MP_ZPOS;
- return res;
-}
-#endif