[GRASS-SVN] r71780 - grass/trunk/lib/vector/diglib

[svn_grass at osgeo.org]

Author: mmetz
Date: 2017-11-19 12:43:53 -0800 (Sun, 19 Nov 2017)
New Revision: 71780

Modified:
   grass/trunk/lib/vector/diglib/inside.c
Log:
diglib: increase numerical stability

Modified: grass/trunk/lib/vector/diglib/inside.c
===================================================================
--- grass/trunk/lib/vector/diglib/inside.c	2017-11-19 20:04:29 UTC (rev 71779)
+++ grass/trunk/lib/vector/diglib/inside.c	2017-11-19 20:43:53 UTC (rev 71780)
@@ -26,7 +26,7 @@
     /* assumes beg_y != end_y */
 
     /* sort for numerical stability */
-    if (end_y < beg_y) {
+    if (end_x < beg_x || (end_x == beg_x && end_y < beg_y)) {
 	b = end_x;
 	end_x = beg_x;
 	beg_x = b;