# HG changeset patch
# User Rik <octave@nomad.inbox5.com>
# Date 1337986925 25200
# Node ID e3da2a68d709399ac6f69aed68b168fbb8fdc15b
# Parent  22244a235fd09f9d17898508666bd2491a6aecf8
Fix memory exhausted bug with log plots of small negative constant data (bug #36493)

* graphics.cc (get_axis_limits): Widen small axis limits based on sign of smaller axis limit.

diff -r 22244a235fd0 -r e3da2a68d709 src/graphics.cc
--- a/src/graphics.cc	Thu May 24 15:38:59 2012 -0400
+++ b/src/graphics.cc	Fri May 25 16:02:05 2012 -0700
@@ -5928,8 +5928,17 @@
           // FIXME -- maybe this test should also be relative?
           if (std::abs (min_val - max_val) < sqrt (DBL_EPSILON))
             {
-              min_val *= 0.9;
-              max_val *= 1.1;
+              // Widen range when too small
+              if (min_val >= 0)
+                {
+                  min_val *= 0.9;
+                  max_val *= 1.1;
+                }
+              else
+                {
+                  min_val *= 1.1;
+                  max_val *= 0.9;
+                }
             }
           if (min_val > 0)
             {