www.usr.com/support/gpl/USR9107_release.1.4.tar.gz

[bcm963xx.git] / userapps / opensource / sshd / libtommath / bn_mp_karatsuba_sqr.c

diff --git a/userapps/opensource/sshd/libtommath/bn_mp_karatsuba_sqr.c b/userapps/opensource/sshd/libtommath/bn_mp_karatsuba_sqr.c
index c9e3e67..315ceab 100755 (executable)
--- a/userapps/opensource/sshd/libtommath/bn_mp_karatsuba_sqr.c
+++ b/userapps/opensource/sshd/libtommath/bn_mp_karatsuba_sqr.c
@@ -1,9 +1,11 @@
+#include <tommath.h>
+#ifdef BN_MP_KARATSUBA_SQR_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
- * LibTomMath is library that provides for multiple-precision
+ * LibTomMath is a library that provides multiple-precision
  * integer arithmetic as well as number theoretic functionality.
  *
- * The library is designed directly after the MPI library by
+ * The library was designed directly after the MPI library by
  * Michael Fromberger but has been written from scratch with
  * additional optimizations in place.
  *
@@ -12,17 +14,15 @@
  *
  * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
  */
-#include <tommath.h>
 
 /* Karatsuba squaring, computes b = a*a using three 
  * half size squarings
  *
- * See comments of mp_karatsuba_mul for details.  It 
+ * See comments of karatsuba_mul for details.  It 
  * is essentially the same algorithm but merely 
  * tuned to perform recursive squarings.
  */
-int
-mp_karatsuba_sqr (mp_int * a, mp_int * b)
+int mp_karatsuba_sqr (mp_int * a, mp_int * b)
 {
   mp_int  x0, x1, t1, t2, x0x0, x1x1;
   int     B, err;
@@ -33,7 +33,7 @@ mp_karatsuba_sqr (mp_int * a, mp_int * b)
   B = a->used;
 
   /* now divide in two */
-  B = B / 2;
+  B = B >> 1;
 
   /* init copy all the temps */
   if (mp_init_size (&x0, B) != MP_OKAY)
@@ -114,3 +114,4 @@ X0:mp_clear (&x0);
 ERR:
   return err;
 }
+#endif