Mercurial > dropbear

diff bn_mp_exteuclid.c @ 190:d8254fc979e9 libtommath-orig LTM_0.35
Initial import of libtommath 0.35
author: Matt Johnston <matt@ucc.asn.au>
date: Fri, 06 May 2005 08:59:30 +0000
parents: d29b64170cf0
--- a/bn_mp_exteuclid.c	Sun Dec 19 11:33:56 2004 +0000
+++ b/bn_mp_exteuclid.c	Fri May 06 08:59:30 2005 +0000
@@ -59,6 +59,13 @@
        if ((err = mp_copy(&t3, &v3)) != MP_OKAY)                                  { goto _ERR; }
    }
 
+   /* make sure U3 >= 0 */
+   if (u3.sign == MP_NEG) {
+      mp_neg(&u1, &u1);
+      mp_neg(&u2, &u2);
+      mp_neg(&u3, &u3);
+   }
+
    /* copy result out */
    if (U1 != NULL) { mp_exch(U1, &u1); }
    if (U2 != NULL) { mp_exch(U2, &u2); }