merge trunkinitsubsystems

1 files changed, 17 insertions, 11 deletions

diff --git a/libtommath/bn_mp_reduce_2k.c b/libtommath/bn_mp_reduce_2k.c
index 428f2ff..2876a75 100644
--- a/libtommath/bn_mp_reduce_2k.c
+++ b/libtommath/bn_mp_reduce_2k.c
@@ -1,4 +1,4 @@
-#include <tommath.h>
+#include <tommath_private.h>
 #ifdef BN_MP_REDUCE_2K_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
@@ -12,7 +12,7 @@
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
+ * Tom St Denis, tstdenis82@gmail.com, http://libtom.org
  */
 
 /* reduces a modulo n where n is of the form 2**p - d */
@@ -20,38 +20,44 @@ int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d)
 {
    mp_int q;
    int    p, res;
-   
+
    if ((res = mp_init(&q)) != MP_OKAY) {
       return res;
    }
-   
-   p = mp_count_bits(n);    
+
+   p = mp_count_bits(n);
 top:
    /* q = a/2**p, a = a mod 2**p */
    if ((res = mp_div_2d(a, p, &q, a)) != MP_OKAY) {
       goto ERR;
    }
-   
+
    if (d != 1) {
       /* q = q * d */
-      if ((res = mp_mul_d(&q, d, &q)) != MP_OKAY) { 
+      if ((res = mp_mul_d(&q, d, &q)) != MP_OKAY) {
          goto ERR;
       }
    }
-   
+
    /* a = a + q */
    if ((res = s_mp_add(a, &q, a)) != MP_OKAY) {
       goto ERR;
    }
-   
+
    if (mp_cmp_mag(a, n) != MP_LT) {
-      s_mp_sub(a, n, a);
+      if ((res = s_mp_sub(a, n, a)) != MP_OKAY) {
+         goto ERR;
+      }
       goto top;
    }
-   
+
 ERR:
    mp_clear(&q);
    return res;
 }
 
 #endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */