1 files changed, 45 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/builtins/NumberConstructor.js b/Source/JavaScriptCore/builtins/NumberConstructor.js
new file mode 100644
index 000000000..2c0e4c868
--- /dev/null
+++ b/Source/JavaScriptCore/builtins/NumberConstructor.js
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 Yusuke Suzuki <utatane.tea@gmail.com>.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
+ */
+
+function isFinite(value)
+{
+    "use strict";
+
+    if (typeof value !== "number")
+        return false;
+
+    // Return false if value is |NaN|.
+    if (value !== value)
+        return false;
+
+    return value !== @Infinity && value !== -@Infinity;
+}
+
+function isNaN(value)
+{
+    "use strict";
+
+    return value !== value;
+}