1 files changed, 17 insertions, 0 deletions
diff --git a/std/math.zig b/std/math.zig
index d8e4951fa9..49396ca25d 100644
--- a/std/math.zig
+++ b/std/math.zig
@@ -1,3 +1,5 @@
+const assert = @import("debug.zig").assert;
+
 pub const Cmp = enum {
     Equal,
     Greater,
@@ -66,3 +68,18 @@ fn getReturnTypeForAbs(comptime T: type) -> type {
     }
 }
 
+fn testMath() {
+    @setFnTest(this);
+
+    assert(%%mulOverflow(i32, 3, 4) == 12);
+    assert(%%addOverflow(i32, 3, 4) == 7);
+    assert(%%subOverflow(i32, 3, 4) == -1);
+    assert(%%shlOverflow(i32, 0b11, 4) == 0b110000);
+
+    comptime {
+        assert(%%mulOverflow(i32, 3, 4) == 12);
+        assert(%%addOverflow(i32, 3, 4) == 7);
+        assert(%%subOverflow(i32, 3, 4) == -1);
+        assert(%%shlOverflow(i32, 0b11, 4) == 0b110000);
+    }
+}