isl_printer_print_aff: always print parentheses around expression

This allows an integer isl_aff to be parsed as a map, even
if the expression starts with an integer division.

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

diff --git a/isl_output.c b/isl_output.c
index bfd6457..5ada374 100644 (file)
--- a/isl_output.c
+++ b/isl_output.c
@@ -2231,11 +2231,12 @@ __isl_give isl_printer *isl_printer_print_aff(__isl_take isl_printer *p,
        p = isl_printer_print_str(p, "{ ");
        p = print_tuple(aff->ls->dim, p, isl_dim_set, 1, 0, NULL);
        p = isl_printer_print_str(p, " -> [");
-       if (!isl_int_is_one(aff->v->el[0]))
-               p = isl_printer_print_str(p, "(");
+       p = isl_printer_print_str(p, "(");
        p = print_affine_of_len(aff->ls->dim, aff->ls->div, p,
                                aff->v->el + 1, 1 + total, 1);
-       if (!isl_int_is_one(aff->v->el[0])) {
+       if (isl_int_is_one(aff->v->el[0]))
+               p = isl_printer_print_str(p, ")");
+       else {
                p = isl_printer_print_str(p, ")/");
                p = isl_printer_print_isl_int(p, aff->v->el[0]);
        }