1 files changed, 21 insertions, 0 deletions
diff --git a/tests/limiter.scade b/tests/limiter.scade
new file mode 100644
index 0000000..a611d98
--- /dev/null
+++ b/tests/limiter.scade
@@ -0,0 +1,21 @@
+const bound: int = 128;
+
+node limiter(x: int; d: int) returns (probe y: int)
+    var s, r: int;
+    let
+        assume in_bounded: x >= -bound and x <= bound;
+        guarantee out_bounded: y >= -bound and y <= bound;
+        s = 0 -> pre y;
+        r = x - s;
+        y = if r <= -d then s - d
+            else if r >= d then s + d
+            else x;
+    tel
+
+node test(i: int) returns(a, b, c: int; exit: bool)
+    let
+        exit = i >= 30;
+        a = (i * 21 + 122) mod (2 * bound) - bound;  -- not really random
+        b = 16;
+        c = limiter(a, b);
+    tel