# HG changeset patch
# User Rik <rik@octave.org>
# Date 1382467813 25200
# Node ID d449f4668b721f595d321de0626bf6cb8ce0010a
# Parent  3f02bcf2bdcc50a26b61cc528dcfe59c39246148
Print warning and abort plot if data range > max float (bug #40246)

* libinterp/corefcn/gl-render.cc(draw_axes): check x, y, and z max values
are smaller than std::numeric_limits<float>::max.  If not, issue warning
and abort plotting.

diff --git a/libinterp/corefcn/gl-render.cc b/libinterp/corefcn/gl-render.cc
--- a/libinterp/corefcn/gl-render.cc
+++ b/libinterp/corefcn/gl-render.cc
@@ -1392,6 +1392,8 @@
 void
 opengl_renderer::draw_axes (const axes::properties& props)
 {
+  static double floatmax = std::numeric_limits<float>::max ();
+
   double x_min = props.get_x_min ();
   double x_max = props.get_x_max ();
   double y_min = props.get_y_min ();
@@ -1399,6 +1401,12 @@
   double z_min = props.get_z_min ();
   double z_max = props.get_z_max ();
 
+  if (x_max > floatmax || y_max > floatmax || z_max > floatmax)
+  {
+    warning ("gl-render: data limits greater than float capacity");
+    return;
+  }
+
   setup_opengl_transformation (props);
 
   // draw axes object