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diff --git a/tools/node_modules/expresso/deps/jscoverage/js/jslibmath.h b/tools/node_modules/expresso/deps/jscoverage/js/jslibmath.h
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   IBM Corp.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef _LIBMATH_H
+#define _LIBMATH_H
+
+#include <math.h>
+#include "jsversion.h"
+
+/*
+ * Use system provided math routines.
+ */
+
+/* The right copysign function is not always named the same thing. */
+#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#define js_copysign __builtin_copysign
+#elif defined WINCE
+#define js_copysign _copysign
+#elif defined _WIN32
+#if _MSC_VER < 1400
+/* Try to work around apparent _copysign bustage in VC6 and VC7. */
+#define js_copysign js_copysign
+extern double js_copysign(double, double);
+#else
+#define js_copysign _copysign
+#endif
+#else
+#define js_copysign copysign
+#endif
+
+#endif /* _LIBMATH_H */
+