X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=basis_reduction_tab.c;h=6c7b040370f396b5e1af06741aa928322d1578c4;hb=de51a9bc4da5dd3f1f9f57c2362da6f9752c44e0;hp=a3053d8e9a62accef947a77b5340bdb4e189d3b1;hpb=42b080be093dbc334e758891b07552b24c73963d;p=platform%2Fupstream%2Fisl.git

diff --git a/basis_reduction_tab.c b/basis_reduction_tab.c
index a3053d8..6c7b040 100644
--- a/basis_reduction_tab.c
+++ b/basis_reduction_tab.c
@@ -1,5 +1,15 @@
+/*
+ * Copyright 2008-2009 Katholieke Universiteit Leuven
+ *
+ * Use of this software is governed by the MIT license
+ *
+ * Written by Sven Verdoolaege, K.U.Leuven, Departement
+ * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
+ */
+
 #include <assert.h>
-#include "isl_seq.h"
+#include <isl_map_private.h>
+#include <isl/seq.h>
 #include "isl_tab.h"
 
 struct tab_lp {
@@ -27,7 +37,7 @@ static void get_obj_val(struct tab_lp* lp, mpq_t *F);
 static void delete_lp(struct tab_lp *lp);
 static int add_lp_row(struct tab_lp *lp, isl_int *row, int dim);
 static void get_alpha(struct tab_lp* lp, int row, mpq_t *alpha);
-static void del_lp_row(struct tab_lp *lp);
+static int del_lp_row(struct tab_lp *lp) WARN_UNUSED;
 static int cut_lp_to_hyperplane(struct tab_lp *lp, isl_int *row);
 
 #define GBR_LP			    	    struct tab_lp
@@ -60,7 +70,6 @@ static int cut_lp_to_hyperplane(struct tab_lp *lp, isl_int *row);
  */
 static struct isl_tab *gbr_tab(struct isl_tab *tab, struct isl_vec *row)
 {
-	int i, j;
 	unsigned dim;
 	struct isl_tab *prod;
 
@@ -171,11 +180,13 @@ static int cut_lp_to_hyperplane(struct tab_lp *lp, isl_int *row)
 		return -1;
 
 	isl_int_neg(lp->row->el[0], lp->tmp);
-	lp->tab = isl_tab_add_eq(lp->tab, lp->row->el);
+	if (isl_tab_add_eq(lp->tab, lp->row->el) < 0)
+		return -1;
 
 	isl_seq_cpy(lp->row->el + 1 + lp->dim, row, lp->dim);
 	isl_seq_clr(lp->row->el + 1, lp->dim);
-	lp->tab = isl_tab_add_eq(lp->tab, lp->row->el);
+	if (isl_tab_add_eq(lp->tab, lp->row->el) < 0)
+		return -1;
 
 	lp->con_offset += 2;
 
@@ -212,7 +223,8 @@ static int add_lp_row(struct tab_lp *lp, isl_int *row, int dim)
 	isl_seq_cpy(lp->row->el + 1, row, lp->dim);
 	isl_seq_neg(lp->row->el + 1 + lp->dim, row, lp->dim);
 
-	lp->tab = isl_tab_add_valid_eq(lp->tab, lp->row->el);
+	if (isl_tab_add_valid_eq(lp->tab, lp->row->el) < 0)
+		return -1;
 
 	return lp->neq++;
 }
@@ -224,8 +236,8 @@ static void get_alpha(struct tab_lp* lp, int row, mpq_t *alpha)
 	isl_int_set(mpq_denref(*alpha), lp->tab->dual->el[0]);
 }
 
-static void del_lp_row(struct tab_lp *lp)
+static int del_lp_row(struct tab_lp *lp)
 {
 	lp->neq--;
-	isl_tab_rollback(lp->tab, lp->stack[lp->neq]);
+	return isl_tab_rollback(lp->tab, lp->stack[lp->neq]);
 }