add isl_vec_cmp_element

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/doc/user.pod b/doc/user.pod
index 6e665a3..5468621 100644 (file)
--- a/doc/user.pod
+++ b/doc/user.pod
@@ -3547,6 +3547,8 @@ The elements can be changed and inspected using the following functions.
                int v);
        __isl_give isl_vec *isl_vec_set_val(
                __isl_take isl_vec *vec, __isl_take isl_val *v);
+       int isl_vec_cmp_element(__isl_keep isl_vec *vec1,
+               __isl_keep isl_vec *vec2, int pos);
        __isl_give isl_vec *isl_vec_fdiv_r(__isl_take isl_vec *vec,
                isl_int m);
 

diff --git a/include/isl/vec.h b/include/isl/vec.h
index 2614db2..ad1309c 100644 (file)
--- a/include/isl/vec.h
+++ b/include/isl/vec.h
@@ -52,6 +52,8 @@ __isl_give isl_vec *isl_vec_set_element_val(__isl_take isl_vec *vec,
        int pos, __isl_take isl_val *v);
 
 int isl_vec_is_equal(__isl_keep isl_vec *vec1, __isl_keep isl_vec *vec2);
+int isl_vec_cmp_element(__isl_keep isl_vec *vec1, __isl_keep isl_vec *vec2,
+       int pos);
 
 void isl_vec_dump(__isl_keep isl_vec *vec);
 __isl_give isl_printer *isl_printer_print_vec(__isl_take isl_printer *printer,

diff --git a/isl_vec.c b/isl_vec.c
index 3cf21c9..f6d5a87 100644 (file)
--- a/isl_vec.c
+++ b/isl_vec.c
@@ -254,6 +254,19 @@ error:
        return isl_vec_free(vec);
 }
 
+/* Compare the elements of "vec1" and "vec2" at position "pos".
+ */
+int isl_vec_cmp_element(__isl_keep isl_vec *vec1, __isl_keep isl_vec *vec2,
+       int pos)
+{
+       if (!vec1 || !vec2)
+               return 0;
+       if (pos < 0 || pos >= vec1->size || pos >= vec2->size)
+               isl_die(isl_vec_get_ctx(vec1), isl_error_invalid,
+                       "position out of range", return 0);
+       return isl_int_cmp(vec1->el[pos], vec2->el[pos]);
+}
+
 int isl_vec_is_equal(__isl_keep isl_vec *vec1, __isl_keep isl_vec *vec2)
 {
        if (!vec1 || !vec2)