From 6b345bb3ab13139cff8ca5b7fdc551110eaaddea Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 26 Feb 2010 23:41:40 +0100
Subject: Fix type conversions to avoid trouble with overflows etc.

---
 src/pattern_sim.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/pattern_sim.c')

diff --git a/src/pattern_sim.c b/src/pattern_sim.c
index 91100426..59e5adb5 100644
--- a/src/pattern_sim.c
+++ b/src/pattern_sim.c
@@ -307,6 +307,9 @@ int main(int argc, char *argv[])
 			for ( x=0; x<image.width; x++ ) {
 			for ( y=0; y<image.height; y++ ) {
 				powder[x+w*y] += image.data[x+w*y];
+				if ( image.data[x+w*y] < 0 ) {
+					STATUS("Negative! %f %i %i\n", image.data[x+w*y], x, y);
+				}
 			}
 			}
 
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