Changeset 0f93f5 in git for kernel/rmodulo2m.cc

Timestamp:

Apr 11, 2011, 11:51:46 AM (12 years ago)

Author:

Frank Seelisch <seelisch@…>

Branches:

(u'jengelh-datetime', 'ceac47cbc86fe4a15902392bdbb9bd2ae0ea02c6')(u'spielwiese', '00e2e9c41af3fde1273eb3633f4c0c7c3db2579d')

Children:

e1375d3317dc56c03a4c242a459ec4e46e17f1cd

Parents:

71a8ba465806f6d73667800a0f72b86ac41d93c8

Message:

changed nCopy for Z/2^m*Z

git-svn-id: file:///usr/local/Singular/svn/trunk@14133 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• kernel/rmodulo2m.cc (modified) (2 diffs)

kernel/rmodulo2m.cc

@@ -460 +460 @@
 }
 
-number nr2mCopy(number a)
-{
-  return a;
-}
-
 number nr2mMapMachineInt(number from)
 {
   NATNUMBER i = ((NATNUMBER) from) & currRing->nr2mModul;
   return (number) i;
+}
+
+number nr2mCopy(number a)
+{
+  /* This method is obviously redundant. But in /kernel/maps.cc a check
+     is performed whether nSetMap(some ring) and nCopy are identical
+     function pointers. For that check to work correctly, we need to
+     implement a version of nCopy for rings of the form Z/2^m*Z, i.e.
+     this method. */
+  return nr2mMapMachineInt(a);
 }
 
@@ -520 +525 @@
      && (src->ringflagb >= dst->ringflagb))
   {
-    //return nr2mCopy;
-    return nr2mMapMachineInt;
+    return nr2mCopy;
   }
   if (rField_is_Ring_Z(src))