Changeset 35f5d9a in git

Timestamp:

May 14, 2014, 10:50:47 AM (10 years ago)

Author:

Martin Lee <martinlee84@…>

Branches:

(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')

Children:

89889e8f44c96b31ec50d021b6a513497cfbbfcc

Parents:

67294f133bef3a2db42680ebd276e07b8960e5b8

git-author:

Martin Lee <martinlee84@web.de>2014-05-14 10:50:47+02:00

git-committer:

Martin Lee <martinlee84@web.de>2014-05-21 15:06:55+02:00

Message:

chg: added a function to compute the norm

File:

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

factory/facAlgExt.cc

@@ -48 +48 @@
   G= gcd (F, G);
   return F/G;
+}
+
+CanonicalForm Norm (const CanonicalForm& F, const Variable& alpha)
+{
+  Variable x= Variable (F.level() + 1);
+  Variable y= F.mvar();
+  CanonicalForm g= F (x, alpha);
+  CanonicalForm mipo= getMipo (alpha);
+  mipo= mipo (x, alpha);
+  mipo *= bCommonDen (mipo);
+
+  int degg= degree (g);
+  int degmipo= degree (mipo);
+  CanonicalForm norm;
+  TIMING_START (fac_alg_resultant);
+  if (degg >= 8 || degmipo >= 8)
+    norm= resultantZ (g, mipo, x);
+  else
+    norm= resultant (g, mipo, x);
+  TIMING_END_AND_PRINT (fac_alg_resultant, "time to compute resultant0: ");
+  return norm;
 }