diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/hypot-exact.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/hypot-exact.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,57 @@
+// Properties of Math.hypot that are guaranteed by the spec.
+
+// If no arguments are passed, the result is +0.
+assertEq(Math.hypot(), +0);
+
+// If any argument is +∞, the result is +∞.
+// If any argument is −∞, the result is +∞.
+for (var inf of [Infinity, -Infinity]) {
+    assertEq(Math.hypot(inf, 0), Infinity);
+    assertEq(Math.hypot(0, inf), Infinity);
+    assertEq(Math.hypot(inf, inf), Infinity);
+    assertEq(Math.hypot(inf, -inf), Infinity);
+
+    assertEq(Math.hypot(inf, -0), Infinity);
+    assertEq(Math.hypot(-0, inf), Infinity);
+    assertEq(Math.hypot(inf, Math.MIN_VALUE), Infinity);
+    assertEq(Math.hypot(Math.MIN_VALUE, inf), Infinity);
+    assertEq(Math.hypot(inf, 1), Infinity);
+    assertEq(Math.hypot(1, inf), Infinity);
+
+    assertEq(Math.hypot(inf, 0, 0), Infinity);
+    assertEq(Math.hypot(0, inf, 0), Infinity);
+    assertEq(Math.hypot(0, 0, inf), Infinity);
+
+    assertEq(Math.hypot(inf, NaN), Infinity);
+    assertEq(Math.hypot(NaN, inf), Infinity);
+
+    assertEq(Math.hypot(inf, NaN, NaN), Infinity);
+    assertEq(Math.hypot(NaN, inf, NaN), Infinity);
+    assertEq(Math.hypot(NaN, NaN, inf), Infinity);
+}
+
+// If no argument is +∞ or −∞, and any argument is NaN, the result is NaN.
+assertEq(Math.hypot(NaN), NaN);
+
+assertEq(Math.hypot(NaN, 0), NaN);
+assertEq(Math.hypot(0, NaN), NaN);
+
+assertEq(Math.hypot(NaN, NaN), NaN);
+
+assertEq(Math.hypot(NaN, 0, 0), NaN);
+assertEq(Math.hypot(0, NaN, 0), NaN);
+assertEq(Math.hypot(0, 0, NaN), NaN);
+
+assertEq(Math.hypot(Number.MAX_VALUE, Number.MIN_VALUE, NaN), NaN);
+
+// If all arguments are either +0 or -0, the result is +0.
+assertEq(Math.hypot(-0, -0), +0);
+assertEq(Math.hypot(+0, -0), +0);
+
+assertEq(Math.hypot(-0, -0, -0), +0);
+assertEq(Math.hypot(+0, -0, -0), +0);
+assertEq(Math.hypot(-0, +0, -0), +0);
+assertEq(Math.hypot(+0, +0, -0), +0);
+
+// The length property of the hypot function is 2.
+assertEq(Math.hypot.length, 2);