isl_basic_set_opt: avoid invalid access on error path

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

diff --git a/isl_seq.c b/isl_seq.c
index bbffae5..42e6b63 100644 (file)
--- 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 MIT 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 +17,20 @@ void isl_seq_clr(isl_int *p, unsigned len)
                isl_int_set_si(p[i], 0);
 }
 
+void isl_seq_set_si(isl_int *p, int v, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               isl_int_set_si(p[i], v);
+}
+
+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;
@@ -21,6 +45,20 @@ void isl_seq_cpy(isl_int *dst, isl_int *src, unsigned len)
                isl_int_set(dst[i], src[i]);
 }
 
+void isl_seq_submul(isl_int *dst, isl_int f, isl_int *src, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               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;
@@ -42,6 +80,27 @@ void isl_seq_scale_down(isl_int *dst, isl_int *src, isl_int m, unsigned len)
                isl_int_divexact(dst[i], src[i], m);
 }
 
+void isl_seq_cdiv_q(isl_int *dst, isl_int *src, isl_int m, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               isl_int_cdiv_q(dst[i], src[i], m);
+}
+
+void isl_seq_fdiv_q(isl_int *dst, isl_int *src, isl_int m, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               isl_int_fdiv_q(dst[i], src[i], m);
+}
+
+void isl_seq_fdiv_r(isl_int *dst, isl_int *src, isl_int m, unsigned len)
+{
+       int i;
+       for (i = 0; i < len; ++i)
+               isl_int_fdiv_r(dst[i], src[i], m);
+}
+
 void isl_seq_combine(isl_int *dst, isl_int m1, isl_int *src1,
                        isl_int m2, isl_int *src2, unsigned len)
 {
@@ -97,6 +156,16 @@ int isl_seq_eq(isl_int *p1, isl_int *p2, unsigned len)
        return 1;
 }
 
+int isl_seq_cmp(isl_int *p1, isl_int *p2, unsigned len)
+{
+       int i;
+       int cmp;
+       for (i = 0; i < len; ++i)
+               if ((cmp = isl_int_cmp(p1[i], p2[i])) != 0)
+                       return cmp;
+       return 0;
+}
+
 int isl_seq_is_neg(isl_int *p1, isl_int *p2, unsigned len)
 {
        int i;
@@ -122,6 +191,27 @@ 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;
+}
+
+void isl_seq_abs_max(isl_int *p, unsigned len, isl_int *max)
+{
+       int i;
+
+       isl_int_set_si(*max, 0);
+
+       for (i = 0; i < len; ++i)
+               if (isl_int_abs_gt(p[i], *max))
+                       isl_int_abs(*max, p[i]);
+}
+
 int isl_seq_abs_min_non_zero(isl_int *p, unsigned len)
 {
        int i, min = isl_seq_first_non_zero(p, len);
@@ -154,6 +244,29 @@ void isl_seq_gcd(isl_int *p, unsigned len, isl_int *gcd)
        }
 }
 
+void isl_seq_normalize(struct isl_ctx *ctx, isl_int *p, unsigned len)
+{
+       if (len == 0)
+               return;
+       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)
+{
+       int i;
+
+       if (len == 0) {
+               isl_int_set_si(*lcm, 1);
+               return;
+       }
+       isl_int_set(*lcm, p[0]);
+       for (i = 1; i < len; ++i)
+               isl_int_lcm(*lcm, *lcm, p[i]);
+}
+
 void isl_seq_inner_product(isl_int *p1, isl_int *p2, unsigned len,
                           isl_int *prod)
 {
@@ -167,11 +280,9 @@ void isl_seq_inner_product(isl_int *p1, isl_int *p2, unsigned len,
                isl_int_addmul(*prod, p1[i], p2[i]);
 }
 
-u_int32_t isl_seq_hash(isl_int *p, unsigned len, unsigned bits)
+uint32_t isl_seq_hash(isl_int *p, unsigned len, uint32_t hash)
 {
        int i;
-       u_int32_t hash = 2166136261u;
-
        for (i = 0; i < len; ++i) {
                if (isl_int_is_zero(p[i]))
                        continue;
@@ -179,9 +290,32 @@ u_int32_t isl_seq_hash(isl_int *p, unsigned len, unsigned bits)
                hash ^= (i & 0xFF);
                hash = isl_int_hash(p[i], hash);
        }
-       if (bits == 32)
-               return hash;
-       if (bits >= 16)
-               return (hash >> bits) ^ (hash & (((u_int32_t)1 << bits) - 1));
-       return ((hash >> bits) ^ hash) & (((u_int32_t)1 << bits) - 1);
+       return hash;
+}
+
+uint32_t isl_seq_get_hash(isl_int *p, unsigned len)
+{
+       uint32_t hash = isl_hash_init();
+
+       return isl_seq_hash(p, len, hash);
+}
+
+uint32_t isl_seq_get_hash_bits(isl_int *p, unsigned len, unsigned bits)
+{
+       uint32_t hash;
+
+       hash = isl_seq_get_hash(p, len);
+       return isl_hash_bits(hash, bits);
+}
+
+void isl_seq_dump(isl_int *p, unsigned len)
+{
+       int i;
+
+       for (i = 0; i < len; ++i) {
+               if (i)
+                       fprintf(stderr, " ");
+               isl_int_print(stderr, p[i], 0);
+       }
+       fprintf(stderr, "\n");
 }