X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_seq.c;h=dd80c1951cc38adfeceeb968e9a5ad8fb6fe43f6;hb=3280c051ef3dc4b05fbe855340547ace629071c6;hp=532b8e6de32a3c26414ba8dac266904549d7dbf0;hpb=9c1e779b6506ccaa7bcc4980be52b7707a4bf8b7;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_seq.c b/isl_seq.c
index 532b8e6..dd80c19 100644
--- a/isl_seq.c
+++ b/isl_seq.c
@@ -1,4 +1,14 @@
-#include "isl_seq.h"
+/*
+ * 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_ctx_private.h>
+#include <isl/seq.h>
 
 void isl_seq_clr(isl_int *p, unsigned len)
 {
@@ -7,6 +17,13 @@ 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;
@@ -28,6 +45,13 @@ void isl_seq_submul(isl_int *dst, isl_int f, isl_int *src, unsigned len)
 		isl_int_submul(dst[i], f, src[i]);
 }
 
+void isl_seq_addmul(isl_int *dst, isl_int f, isl_int *src, unsigned len)
+{
+	int i;
+	for (i = 0; i < len; ++i)
+		isl_int_addmul(dst[i], f, src[i]);
+}
+
 void isl_seq_swp_or_cpy(isl_int *dst, isl_int *src, unsigned len)
 {
 	int i;
@@ -160,6 +184,16 @@ int isl_seq_first_non_zero(isl_int *p, unsigned len)
 	return -1;
 }
 
+int isl_seq_last_non_zero(isl_int *p, unsigned len)
+{
+	int i;
+
+	for (i = len - 1; i >= 0; --i)
+		if (!isl_int_is_zero(p[i]))
+			return i;
+	return -1;
+}
+
 int isl_seq_abs_min_non_zero(isl_int *p, unsigned len)
 {
 	int i, min = isl_seq_first_non_zero(p, len);
@@ -192,17 +226,14 @@ 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)