Changeset ad3f9d in git

Timestamp:

Apr 13, 2018, 11:48:53 AM (6 years ago)

Author:

Hans Schoenemann <hannes@…>

Branches:

(u'fieker-DuVal', '117eb8c30fc9e991c4decca4832b1d19036c4c65')(u'spielwiese', 'b4f17ed1d25f93d46dbe29e4b499baecc2fd51bb')

Children:

1220433139a671d19c823f345ecdacdec4a799a668fa7ca6253da1ec3ddfa543704d4bcb86dc523c

Parents:

cc055e0b475b7d52dd09b42cd095fba3dd904333

Message:

doc: warning (inexact coeffs) in std,slimgb

Files:

• Singular/iparith.cc (modified) (2 diffs)
• doc/reference.doc (modified) (previous)

Singular/iparith.cc

@@ -4714 +4714 @@
     return TRUE;
   }
+  if (rField_is_numeric(currRing))
+    WarnS("groebner base computations with inexact coefficients can not be trusted due to rounding errors");
   intvec *w=(intvec *)atGet(u,"isHomog",INTVEC_CMD);
   // tHomog hom=testHomog;
@@ -4820 +4822 @@
 static BOOLEAN jjSTD(leftv res, leftv v)
 {
+  if (rField_is_numeric(currRing))
+    WarnS("groebner base computations with inexact coefficients can not be trusted due to rounding errors");
   ideal result;
   ideal v_id=(ideal)v->Data();