add isl_aff_get_constant_val

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

diff --git a/isl_aff.c b/isl_aff.c
index 3210032..a4b9748 100644 (file)
--- a/isl_aff.c
+++ b/isl_aff.c
@@ -417,6 +417,21 @@ int isl_aff_get_constant(__isl_keep isl_aff *aff, isl_int *v)
        return 0;
 }
 
+/* Return the constant term of "aff".
+ */
+__isl_give isl_val *isl_aff_get_constant_val(__isl_keep isl_aff *aff)
+{
+       isl_ctx *ctx;
+       isl_val *v;
+
+       if (!aff)
+               return NULL;
+
+       ctx = isl_aff_get_ctx(aff);
+       v = isl_val_rat_from_isl_int(ctx, aff->v->el[1], aff->v->el[0]);
+       return isl_val_normalize(v);
+}
+
 int isl_aff_get_coefficient(__isl_keep isl_aff *aff,
        enum isl_dim_type type, int pos, isl_int *v)
 {