Changeset e9a5b62 in git

Timestamp:

Apr 4, 2012, 12:12:15 PM (11 years ago)

Author:

Martin Lee <martinlee84@…>

Branches:

(u'spielwiese', '8e0ad00ce244dfd0756200662572aef8402f13d5')

Children:

57daf8775ce440fee4a540e84b75aba9ccae0006

Parents:

81e3366b5aee76a90a00a12e0e21d82dac227d1b

git-author:

Martin Lee <martinlee84@web.de>2012-04-04 12:12:15+02:00

git-committer:

Martin Lee <martinlee84@web.de>2012-04-04 15:01:01+02:00

Message:

fix: division by zero in extgcd

File:

• factory/cf_gcd.cc (modified) (1 diff)

factory/cf_gcd.cc

@@ -296 +296 @@
 extgcd ( const CanonicalForm & f, const CanonicalForm & g, CanonicalForm & a, CanonicalForm & b )
 {
+  if (f.isZero())
+  {
+    a= 0;
+    b= 1;
+    return g;
+  }
+  else if (g.isZero())
+  {
+    a= 1;
+    b= 0;
+    return f;
+  }
 #ifdef HAVE_NTL
   if (isOn(SW_USE_NTL_GCD_P) && ( getCharacteristic() > 0 ) && (CFFactory::gettype() != GaloisFieldDomain)