Implement Object.is and Number.is[Finite,NaN] functions.

test/mjsunit/number-is.js

Index: test/mjsunit/number-is.js
diff --git a/test/mjsunit/number-is.js b/test/mjsunit/number-is.js
new file mode 100644
index 0000000000000000000000000000000000000000..1589fc64ad44c8bae27d192a7b9f4cc42abf3a9c
--- /dev/null
+++ b/test/mjsunit/number-is.js
@@ -0,0 +1,58 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Test Harmony Number.isFinite() and Number.isNaN() functions.
+
+assertTrue(Number.isFinite(0));
+assertTrue(Number.isFinite(Number.MIN_VALUE));
+assertTrue(Number.isFinite(Number.MAX_VALUE));
+assertFalse(Number.isFinite(Number.NaN));
+assertFalse(Number.isFinite(Number.POSITIVE_INFINITY));
+assertFalse(Number.isFinite(Number.NEGATIVE_INFINITY));
+assertFalse(Number.isFinite(new Number(0)));
+assertFalse(Number.isFinite(1/0));
+assertFalse(Number.isFinite(-1/0));
+assertFalse(Number.isFinite({}));
+assertFalse(Number.isFinite([]));
+assertFalse(Number.isFinite("s"));
+assertFalse(Number.isFinite(null));
+assertFalse(Number.isFinite(undefined));
+
+assertFalse(Number.isNaN(0));
+assertFalse(Number.isNaN(Number.MIN_VALUE));
+assertFalse(Number.isNaN(Number.MAX_VALUE));
+assertTrue(Number.isNaN(Number.NaN));
+assertFalse(Number.isNaN(Number.POSITIVE_INFINITY));
+assertFalse(Number.isNaN(Number.NEGATIVE_INFINITY));
+assertFalse(Number.isNaN(new Number(0)));
+assertFalse(Number.isNaN(1/0));
+assertFalse(Number.isNaN(-1/0));
+assertFalse(Number.isNaN({}));
+assertFalse(Number.isNaN([]));
+assertFalse(Number.isNaN("s"));
+assertFalse(Number.isNaN(null));
+assertFalse(Number.isNaN(undefined));