1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib/_int.rs b/src/lib/_int.rs
index 29144a82..9b756675 100644
--- a/src/lib/_int.rs
+++ b/src/lib/_int.rs
@@ -13,6 +13,11 @@ fn ne(int x, int y) -> bool { ret x != y; }
 fn ge(int x, int y) -> bool { ret x >= y; }
 fn gt(int x, int y) -> bool { ret x > y; }
 
+fn positive(int x) -> bool { ret x > 0; }
+fn negative(int x) -> bool { ret x < 0; }
+fn nonpositive(int x) -> bool { ret x <= 0; }
+fn nonnegative(int x) -> bool { ret x >= 0; }
+
 iter range(mutable int lo, int hi) -> int {
   while (lo < hi) {
     put lo;