[Plplot-cvs] SF.net SVN: plplot:[13027] trunk/src/plvect.c

[<hba...@us...>]

Revision: 13027
          http://sourceforge.net/p/plplot/code/13027
Author:   hbabcock
Date:     2014-02-28 01:43:31 +0000 (Fri, 28 Feb 2014)
Log Message:
-----------
Fix divide by zero error in the case where umax or vmax are all zero.

Modified Paths:
--------------
    trunk/src/plvect.c

Modified: trunk/src/plvect.c
===================================================================
--- trunk/src/plvect.c	2014-02-26 01:14:43 UTC (rev 13026)
+++ trunk/src/plvect.c	2014-02-28 01:43:31 UTC (rev 13027)
@@ -200,7 +200,21 @@
                 vmax = ( v[i][j] > vmax ) ? v[i][j] : vmax;
             }
         }
-        lscale = 1.5 * MIN( dxmin / umax, dymin / vmax );
+        if (umax != 0.0) 
+        {
+	    dxmin = dxmin / umax;
+        }
+        else {
+	    dxmin = 10E10;
+        }
+        if (vmax != 0.0) 
+        {
+	    dymin = dymin / vmax;
+        }
+        else {
+	    dymin = 10E10;
+        }
+        lscale = 1.5 * MIN( dxmin, dymin);
         if ( scale < 0.0 )
         {
             scale = -scale * lscale;

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