1 files changed, 103 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/round-float32.js b/js/src/jit-test/tests/ion/round-float32.js
new file mode 100644
index 0000000000..88bc7a842e
--- /dev/null
+++ b/js/src/jit-test/tests/ion/round-float32.js
@@ -0,0 +1,103 @@
+// Bug 1073910
+(function() {
+    function roundf(y) {
+        return Math.round(Math.fround(y));
+    }
+
+    var x = -1;
+    assertEq(roundf(x), x);
+    assertEq(roundf(x), x);
+
+    var x = -2;
+    assertEq(roundf(x), x);
+    assertEq(roundf(x), x);
+
+    var x = -1024;
+    assertEq(roundf(x), x);
+
+    var x = -14680050;
+    assertEq(roundf(x), Math.fround(x));
+
+    var x = -8388610;
+    assertEq(roundf(x), Math.fround(x));
+})();
+
+// Bug 1000606
+(function() {
+    function f() {
+        var d = Math.fround(0.4999999701976776);
+        return Math.round(d);
+    }
+    assertEq(f(), f());
+
+    function g() {
+        var c = Math.fround(8886111);
+        return Math.round(c);
+    }
+    assertEq(g(), g());
+})();
+
+// Bug 1124485
+(function() {
+    function h(x) {
+        var y = Math.fround(x);
+        assertEq(y, Math.pow(y, 1));
+    }
+    h(0);
+    h(2147483647);
+})();
+
+// Bug 1122344
+(function() {
+    function f() {
+        return Math.round(Math.fround(-13527757));
+    };
+    assertEq(f(), f());
+})();
+
+(function() {
+    // Test values around -0.5 and +0.5
+    var f32 = new Float32Array(1);
+    var i32 = new Int32Array(f32.buffer);
+
+    function round(x) { return Math.round(x); }
+    function roundf(x) { return Math.round(Math.fround(x)); }
+
+    // Warm up
+    round(2.5);
+    round(3.5);
+    roundf(2.5);
+    roundf(3.5);
+
+    f32[0] = 0.5;
+    i32[0] += 1;
+    print('0.5+e =', f32[0]);
+
+    var x = f32[0];
+    assertEq(round(x), 1);
+    assertEq(roundf(x), 1);
+
+    f32[0] = 0.5;
+    i32[0] -= 1;
+    print('0.5-e =', f32[0]);
+
+    var x = f32[0];
+    assertEq(round(x), 0);
+    assertEq(roundf(x), 0);
+
+    f32[0] = -0.5;
+    i32[0] += 1;
+    print('-0.5-e =', f32[0]);
+
+    var x = f32[0];
+    assertEq(round(x), -1);
+    assertEq(roundf(x), -1);
+
+    f32[0] = -0.5;
+    i32[0] -= 1;
+    print('-0.5+e =', f32[0]);
+
+    var x = f32[0];
+    assertEq(round(x), -0);
+    assertEq(roundf(x), -0);
+})();