Changeset 20758 for trunk/psLib/src/imageops/psImageInterpolate.c

Timestamp:

Nov 14, 2008, 5:09:34 PM (17 years ago)

Author:

Paul Price

Message:

Catch sumKernel=0 to prevent FPE.

File:

• trunk/psLib/src/imageops/psImageInterpolate.c (modified) (2 diffs)

trunk/psLib/src/imageops/psImageInterpolate.c

@@ -7 +7 @@
  *  @author Paul Price, IfA
  *
- *  @version $Revision: 1.29 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2008-10-22 22:28:44 $
+ *  @version $Revision: 1.30 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2008-11-15 03:09:34 $
  *
  *  Copyright 2004-2007 Institute for Astronomy, University of Hawaii
@@ -427 +427 @@
 #define INTERPOLATE_RESULT() \
     psImageInterpolateStatus status = PS_INTERPOLATE_STATUS_ERROR; /* Status of interpolation */ \
-    *imageValue = sumImage / sumKernel; \
+    *imageValue = sumKernel > 0 ? sumImage / sumKernel : interp->badImage; \
     if (wantVariance) { \
         *varianceValue = sumVariance / (sumKernel2 - sumBad); \