src/ChangeLog:

2007-09-13  John W. Eaton  <address@hidden>

	* DLD-FUNCTIONS/__glpk__.cc (glpk): Pass LPX_FX, not LB_DB, to
	lpx_set_col_bnds when lb[i] == ub[i].
	From: Zhi Wang <address@hidden>.

 
Index: src/DLD-FUNCTIONS/__glpk__.cc
===================================================================
RCS file: /cvs/octave/src/DLD-FUNCTIONS/__glpk__.cc,v
retrieving revision 1.23
diff -u -u -r1.23 __glpk__.cc
--- src/DLD-FUNCTIONS/__glpk__.cc	26 Jul 2007 18:44:07 -0000	1.23
+++ src/DLD-FUNCTIONS/__glpk__.cc	13 Sep 2007 21:05:08 -0000
@@ -196,7 +196,12 @@
     {
       //-- Define type of the structural variables
       if (! freeLB[i] && ! freeUB[i])
-	lpx_set_col_bnds (lp, i+1, LPX_DB, lb[i], ub[i]);
+	{
+	  if (lb[i] != ub[i])
+	    lpx_set_col_bnds (lp, i+1, LPX_DB, lb[i], ub[i]);
+	  else
+	    lpx_set_col_bnds (lp, i+1, LPX_FX, lb[i], ub[i]);
+	}
       else
 	{
 	  if (! freeLB[i] && freeUB[i])