summaryrefslogtreecommitdiffstats
path: root/tcl8.6/libtommath/bn_mp_mod_2d.c
diff options
context:
space:
mode:
Diffstat (limited to 'tcl8.6/libtommath/bn_mp_mod_2d.c')
-rw-r--r--tcl8.6/libtommath/bn_mp_mod_2d.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/tcl8.6/libtommath/bn_mp_mod_2d.c b/tcl8.6/libtommath/bn_mp_mod_2d.c
deleted file mode 100644
index 0170f65..0000000
--- a/tcl8.6/libtommath/bn_mp_mod_2d.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include <tommath.h>
-#ifdef BN_MP_MOD_2D_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
- */
-
-/* calc a value mod 2**b */
-int
-mp_mod_2d (const mp_int * a, int b, mp_int * c)
-{
- int x, res;
-
- /* if b is <= 0 then zero the int */
- if (b <= 0) {
- mp_zero (c);
- return MP_OKAY;
- }
-
- /* if the modulus is larger than the value than return */
- if (b >= (int) (a->used * DIGIT_BIT)) {
- res = mp_copy (a, c);
- return res;
- }
-
- /* copy */
- if ((res = mp_copy (a, c)) != MP_OKAY) {
- return res;
- }
-
- /* zero digits above the last digit of the modulus */
- for (x = (b / DIGIT_BIT) + ((b % DIGIT_BIT) == 0 ? 0 : 1); x < c->used; x++) {
- c->dp[x] = 0;
- }
- /* clear the digit that is not completely outside/inside the modulus */
- c->dp[b / DIGIT_BIT] &=
- (mp_digit) ((((mp_digit) 1) << (((mp_digit) b) % DIGIT_BIT)) - ((mp_digit) 1));
- mp_clamp (c);
- return MP_OKAY;
-}
-#endif