isl_ctx: add negone

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

diff --git a/isl_seq.c b/isl_seq.c
index 62d8da5..a67c0e9 100644 (file)
--- a/isl_seq.c
+++ b/isl_seq.c
@@ -171,6 +171,19 @@ void isl_seq_gcd(isl_int *p, unsigned len, isl_int *gcd)
        }
 }
 
+void isl_seq_normalize(isl_int *p, unsigned len)
+{
+       isl_int gcd;
+
+       if (len == 0)
+               return;
+       isl_int_init(gcd);
+       isl_seq_gcd(p, len, &gcd);
+       if (!isl_int_is_zero(gcd))
+               isl_seq_scale_down(p, p, gcd, len);
+       isl_int_clear(gcd);
+}
+
 void isl_seq_lcm(isl_int *p, unsigned len, isl_int *lcm)
 {
        int i;