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

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

diff --git a/userapps/opensource/sshd/libtommath/bn_mp_cmp_mag.c b/userapps/opensource/sshd/libtommath/bn_mp_cmp_mag.c
index 87b56d6..a0f351c 100755 (executable)
--- a/userapps/opensource/sshd/libtommath/bn_mp_cmp_mag.c
+++ b/userapps/opensource/sshd/libtommath/bn_mp_cmp_mag.c
@@ -1,9 +1,11 @@
+#include <tommath.h>
+#ifdef BN_MP_CMP_MAG_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.
  *
@@ -12,32 +14,38 @@
  *
  * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
  */
-#include <tommath.h>
 
 /* compare maginitude of two ints (unsigned) */
-int
-mp_cmp_mag (mp_int * a, mp_int * b)
+int mp_cmp_mag (mp_int * a, mp_int * b)
 {
   int     n;
+  mp_digit *tmpa, *tmpb;
 
   /* compare based on # of non-zero digits */
   if (a->used > b->used) {
     return MP_GT;
-  } 
+  }
   
   if (a->used < b->used) {
     return MP_LT;
   }
 
+  /* alias for a */
+  tmpa = a->dp + (a->used - 1);
+
+  /* alias for b */
+  tmpb = b->dp + (a->used - 1);
+
   /* compare based on digits  */
-  for (n = a->used - 1; n >= 0; n--) {
-    if (a->dp[n] > b->dp[n]) {
+  for (n = 0; n < a->used; ++n, --tmpa, --tmpb) {
+    if (*tmpa > *tmpb) {
       return MP_GT;
-    } 
-    
-    if (a->dp[n] < b->dp[n]) {
+    }
+
+    if (*tmpa < *tmpb) {
       return MP_LT;
     }
   }
   return MP_EQ;
 }
+#endif