Changeset 0146ce in git

Timestamp:

Mar 22, 2000, 9:56:05 AM (24 years ago)

Author:

Thomas Siebert <siebert@…>

Branches:

(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')

Children:

adc638370441b8c15875bd2cf8fe7167400781c8

Parents:

e95eaa7b5b685b96b727289d96557b7d1b0984d4

Message:

Handling of non-minimized Betti numbers


git-svn-id: file:///usr/local/Singular/svn/trunk@4213 2c84dea3-7e68-4137-9b89-c4e89433aadc

Location:

Singular

Files:

• syz.cc (modified) (2 diffs)
• syz1.cc (modified) (3 diffs)

Singular/syz.cc

@@ -2 +2 @@
 *  Computer Algebra System SINGULAR     *
 ****************************************/
-/* $Id: syz.cc,v 1.35 2000-02-29 10:46:03 siebert Exp $ */
+/* $Id: syz.cc,v 1.36 2000-03-22 08:56:04 siebert Exp $ */
 
 /*
@@ -230 +230 @@
 
 /*2
-* make Gauss for one element
+* make Gauss with the element elnum in the module component ModComp
+* for the generators from - till
 */
 void syGaussForOne(ideal syz, int elnum, int ModComp,int from,int till)

Singular/syz1.cc

@@ -2 +2 @@
 *  Computer Algebra System SINGULAR     *
 ****************************************/
-/* $Id: syz1.cc,v 1.56 2000-03-01 16:08:37 Singular Exp $ */
+/* $Id: syz1.cc,v 1.57 2000-03-22 08:56:05 siebert Exp $ */
 /*
 * ABSTRACT: resolutions
@@ -1750 +1750 @@
   if (syzstr->betti!=NULL)
   {
-    return ivCopy(syzstr->betti);
+    if (minim || (syzstr->resPairs!=NULL))
+      return ivCopy(syzstr->betti);
   }
   intvec *result;
@@ -1805 +1806 @@
       }
     }
-    syzstr->betti = result;
   }
   else if (syzstr->fullres!=NULL)
-    syzstr->betti = syBetti(syzstr->fullres,syzstr->length,&dummy,NULL,minim,row_shift);
+    result = syBetti(syzstr->fullres,syzstr->length,&dummy,NULL,minim,row_shift);
   else
-    syzstr->betti = syBetti(syzstr->minres,syzstr->length,&dummy,NULL,minim,row_shift);
-  return ivCopy(syzstr->betti);
+    result = syBetti(syzstr->minres,syzstr->length,&dummy,NULL,minim,row_shift);
+  if ((minim) || (syzstr->resPairs!=NULL)) 
+    syzstr->betti = ivCopy(result);
+  return result;
 }