2d6dab1f2e
BUG=v8:2938 R=dslomov@chromium.org Review URL: https://codereview.chromium.org/28793002 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
61 lines
2.2 KiB
JavaScript
61 lines
2.2 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'use strict';
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// ES6 draft 09-27-13, section 20.2.2.28.
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function MathSign(x) {
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x = TO_NUMBER_INLINE(x);
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if (x > 0) return 1;
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if (x < 0) return -1;
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if (x === 0) return x;
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return NAN;
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}
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// ES6 draft 09-27-13, section 20.2.2.34.
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function MathTrunc(x) {
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x = TO_NUMBER_INLINE(x);
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if (x > 0) return MathFloor(x);
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if (x < 0) return MathCeil(x);
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if (x === 0) return x;
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return NAN;
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}
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function ExtendMath() {
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%CheckIsBootstrapping();
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// Set up the non-enumerable functions on the Math object.
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InstallFunctions($Math, DONT_ENUM, $Array(
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"sign", MathSign,
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"trunc", MathTrunc
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));
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}
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ExtendMath();
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