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49 lines
2.3 KiB
49 lines
2.3 KiB
15 years ago
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// Copyright 2010 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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// Test Math.sin and Math.abs.
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assertEquals(1, Math.abs(1)); // Positive SMI.
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assertEquals(1, Math.abs(-1)); // Negative SMI.
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assertEquals(0.5, Math.abs(0.5)); // Positive double.
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assertEquals(0.5, Math.abs(-0.5)); // Negative double.
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assertEquals('Infinity', Math.abs(Number('+Infinity').toString()));
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assertEquals('Infinity', Math.abs(Number('-Infinity').toString()));
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assertEquals('NaN', Math.abs(NaN).toString());
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assertEquals('NaN', Math.abs(-NaN).toString());
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var minusZero = 1 / (-1 / 0);
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function isMinusZero(x) {
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return x === 0 && 1 / x < 0;
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}
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assertTrue(!isMinusZero(0));
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assertTrue(isMinusZero(minusZero));
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assertEquals(0, Math.abs(minusZero));
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assertTrue(!isMinusZero(Math.abs(minusZero)));
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assertTrue(!isMinusZero(Math.abs(0.0)));
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