isl_convex_hull.c: initial_facet_constraint: fix error handling

[platform/upstream/isl.git] / isl_seq.c

diff --git a/isl_seq.c b/isl_seq.c
index 73af52d..5747b39 100644 (file)
--- a/isl_seq.c
+++ b/isl_seq.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright 2008-2009 Katholieke Universiteit Leuven
+ *
+ * Use of this software is governed by the GNU LGPLv2.1 license
+ *
+ * Written by Sven Verdoolaege, K.U.Leuven, Departement
+ * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
+ */
+
 #include "isl_seq.h"
 
 void isl_seq_clr(isl_int *p, unsigned len)
@@ -7,6 +16,13 @@ void isl_seq_clr(isl_int *p, unsigned len)
                isl_int_set_si(p[i], 0);
 }
 
+void isl_seq_set(isl_int *p, isl_int v, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               isl_int_set(p[i], v);
+}
+
 void isl_seq_neg(isl_int *dst, isl_int *src, unsigned len)
 {
        int i;
@@ -202,17 +218,14 @@ void isl_seq_gcd(isl_int *p, unsigned len, isl_int *gcd)
        }
 }
 
-void isl_seq_normalize(isl_int *p, unsigned len)
+void isl_seq_normalize(struct isl_ctx *ctx, isl_int *p, unsigned len)
 {
-       isl_int gcd;
-
        if (len == 0)
                return;
-       isl_int_init(gcd);
-       isl_seq_gcd(p, len, &gcd);
-       if (!isl_int_is_zero(gcd))
-               isl_seq_scale_down(p, p, gcd, len);
-       isl_int_clear(gcd);
+       isl_seq_gcd(p, len, &ctx->normalize_gcd);
+       if (!isl_int_is_zero(ctx->normalize_gcd) &&
+           !isl_int_is_one(ctx->normalize_gcd))
+               isl_seq_scale_down(p, p, ctx->normalize_gcd, len);
 }
 
 void isl_seq_lcm(isl_int *p, unsigned len, isl_int *lcm)