add isl_map_is_translation

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

diff --git a/isl_map.c b/isl_map.c
index d221f21..9b87bd8 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -273,6 +273,66 @@ struct isl_dim *isl_set_get_dim(struct isl_set *set)
        return isl_dim_copy(set->dim);
 }
 
+__isl_give isl_basic_map *isl_basic_map_set_dim_name(
+       __isl_take isl_basic_map *bmap,
+       enum isl_dim_type type, unsigned pos, const char *s)
+{
+       if (!bmap)
+               return NULL;
+       bmap->dim = isl_dim_set_name(bmap->dim, type, pos, s);
+       if (!bmap->dim)
+               goto error;
+       return bmap;
+error:
+       isl_basic_map_free(bmap);
+       return NULL;
+}
+
+__isl_give isl_map *isl_map_set_dim_name(__isl_take isl_map *map,
+       enum isl_dim_type type, unsigned pos, const char *s)
+{
+       int i;
+
+       if (!map)
+               return NULL;
+
+       map->dim = isl_dim_set_name(map->dim, type, pos, s);
+       if (!map->dim)
+               goto error;
+
+       for (i = 0; i < map->n; ++i) {
+               map->p[i] = isl_basic_map_set_dim_name(map->p[i], type, pos, s);
+               if (!map->p[i])
+                       goto error;
+       }
+
+       return map;
+error:
+       isl_map_free(map);
+       return NULL;
+}
+
+__isl_give isl_basic_set *isl_basic_set_set_dim_name(
+       __isl_take isl_basic_set *bset,
+       enum isl_dim_type type, unsigned pos, const char *s)
+{
+       return (isl_basic_set *)isl_basic_map_set_dim_name(
+               (isl_basic_map *)bset, type, pos, s);
+}
+
+__isl_give isl_set *isl_set_set_dim_name(__isl_take isl_set *set,
+       enum isl_dim_type type, unsigned pos, const char *s)
+{
+       return (isl_set *)isl_map_set_dim_name((isl_map *)set, type, pos, s);
+}
+
+int isl_basic_map_is_rational(__isl_keep isl_basic_map *bmap)
+{
+       if (!bmap)
+               return -1;
+       return ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL);
+}
+
 static struct isl_basic_map *basic_map_init(struct isl_ctx *ctx,
                struct isl_basic_map *bmap, unsigned extra,
                unsigned n_eq, unsigned n_ineq)
@@ -5950,6 +6010,13 @@ error:
        return NULL;
 }
 
+__isl_give isl_basic_set *isl_basic_set_sort_constraints(
+       __isl_take isl_basic_set *bset)
+{
+       return (struct isl_basic_set *)isl_basic_map_sort_constraints(
+                                               (struct isl_basic_map *)bset);
+}
+
 struct isl_basic_map *isl_basic_map_normalize(struct isl_basic_map *bmap)
 {
        if (!bmap)
@@ -6020,6 +6087,13 @@ static int isl_basic_map_fast_is_equal(struct isl_basic_map *bmap1,
        return isl_basic_map_fast_cmp(bmap1, bmap2) == 0;
 }
 
+int isl_basic_set_fast_is_equal(__isl_keep isl_basic_set *bset1,
+       __isl_keep isl_basic_set *bset2)
+{
+       return isl_basic_map_fast_is_equal((isl_basic_map *)bset1,
+                                           (isl_basic_map *)bset2);
+}
+
 static int qsort_bmap_cmp(const void *p1, const void *p2)
 {
        const struct isl_basic_map *bmap1 = *(const struct isl_basic_map **)p1;
@@ -6709,3 +6783,46 @@ int isl_basic_set_dims_get_sign(__isl_keep isl_basic_set *bset,
        first += pos(bset->dim, type) - 1;
        return isl_basic_set_vars_get_sign(bset, first, n, signs);
 }
+
+/* Check if the given map is single-valued.
+ * We simply compute
+ *
+ *     M \circ M^-1
+ *
+ * and check if the result is a subset of the identity mapping.
+ */
+int isl_map_is_single_valued(__isl_keep isl_map *map)
+{
+       isl_map *test;
+       isl_map *id;
+       int sv;
+
+       test = isl_map_reverse(isl_map_copy(map));
+       test = isl_map_apply_range(test, isl_map_copy(map));
+
+       id = isl_map_identity(isl_dim_range(isl_map_get_dim(map)));
+
+       sv = isl_map_is_subset(test, id);
+
+       isl_map_free(test);
+       isl_map_free(id);
+
+       return sv;
+}
+
+int isl_set_is_singleton(__isl_keep isl_set *set)
+{
+       return isl_map_is_single_valued((isl_map *)set);
+}
+
+int isl_map_is_translation(__isl_keep isl_map *map)
+{
+       int ok;
+       isl_set *delta;
+
+       delta = isl_map_deltas(isl_map_copy(map));
+       ok = isl_set_is_singleton(delta);
+       isl_set_free(delta);
+
+       return ok;
+}