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diff liboctave/dColVector.cc @ 14394:ed8c4921bf61 stable

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correctly fill result for M * v for Nx0 * 0x1 operations * dColVector.cc (operator * (const Matrix&, const ColumnVector&)): Fill result if NC is 0. * CColVector.cc (operator * (const ComplexMatrix&, const ComplexColumnVector&)): Likewise. * fCColVector.cc (const FloatComplexMatrix&, const FloatComplexColumnVector&)): Likewise. * fColVector.cc (const FloatMatrix&, const FloatColumnVector&)): Likewise.
author John W. Eaton <jwe@octave.org>
date Thu, 23 Feb 2012 13:50:26 -0500
parents 72c96de7a403
children 460a3c6d8bf1
line wrap: on
line diff
--- a/liboctave/dColVector.cc
+++ b/liboctave/dColVector.cc
@@ -212,12 +212,17 @@
 
       if (nr != 0)
         {
-          double *y = retval.fortran_vec ();
+          if (nc == 0)
+            retval.fill (0.0);
+          else
+            {
+              double *y = retval.fortran_vec ();
 
-          F77_XFCN (dgemv, DGEMV, (F77_CONST_CHAR_ARG2 ("N", 1),
-                                   nr, nc, 1.0, m.data (), nr,
-                                   a.data (), 1, 0.0, y, 1
-                                   F77_CHAR_ARG_LEN (1)));
+              F77_XFCN (dgemv, DGEMV, (F77_CONST_CHAR_ARG2 ("N", 1),
+                                       nr, nc, 1.0, m.data (), nr,
+                                       a.data (), 1, 0.0, y, 1
+                                       F77_CHAR_ARG_LEN (1)));
+            }
         }
     }