Mercurial > dropbear

diff bn_s_mp_mul_high_digs.c @ 142:d29b64170cf0 libtommath-orig
import of libtommath 0.32
author: Matt Johnston <matt@ucc.asn.au>
date: Sun, 19 Dec 2004 11:33:56 +0000
parents: 86e0b50a9b58
--- a/bn_s_mp_mul_high_digs.c	Tue Jun 15 14:42:57 2004 +0000
+++ b/bn_s_mp_mul_high_digs.c	Sun Dec 19 11:33:56 2004 +0000
@@ -1,3 +1,5 @@
+#include <tommath.h>
+#ifdef BN_S_MP_MUL_HIGH_DIGS_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
  * LibTomMath is a library that provides multiple-precision
@@ -12,7 +14,6 @@
  *
  * Tom St Denis, [email protected], http://math.libtomcrypt.org
  */
-#include <tommath.h>
 
 /* multiplies |a| * |b| and does not compute the lower digs digits
  * [meant to get the higher part of the product]
@@ -27,10 +28,12 @@
   mp_digit tmpx, *tmpt, *tmpy;
 
   /* can we use the fast multiplier? */
+#ifdef BN_FAST_S_MP_MUL_HIGH_DIGS_C
   if (((a->used + b->used + 1) < MP_WARRAY)
       && MIN (a->used, b->used) < (1 << ((CHAR_BIT * sizeof (mp_word)) - (2 * DIGIT_BIT)))) {
     return fast_s_mp_mul_high_digs (a, b, c, digs);
   }
+#endif
 
   if ((res = mp_init_size (&t, a->used + b->used + 1)) != MP_OKAY) {
     return res;
@@ -71,3 +74,4 @@
   mp_clear (&t);
   return MP_OKAY;
 }
+#endif