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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
103 lines
4.1 KiB
JavaScript
103 lines
4.1 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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// Flags: --allow-natives-syntax
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var test_id = 0;
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function testTrunc(expected, input) {
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var test = new Function('n',
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'"' + (test_id++) + '";return Math.trunc(n)');
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assertEquals(expected, test(input));
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assertEquals(expected, test(input));
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assertEquals(expected, test(input));
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%OptimizeFunctionOnNextCall(test);
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assertEquals(expected, test(input));
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var test_double_input = new Function(
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'n',
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'"' + (test_id++) + '";return Math.trunc(+n)');
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assertEquals(expected, test_double_input(input));
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assertEquals(expected, test_double_input(input));
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assertEquals(expected, test_double_input(input));
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%OptimizeFunctionOnNextCall(test_double_input);
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assertEquals(expected, test_double_input(input));
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var test_double_output = new Function(
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'n',
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'"' + (test_id++) + '";return Math.trunc(n) + -0.0');
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assertEquals(expected, test_double_output(input));
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assertEquals(expected, test_double_output(input));
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assertEquals(expected, test_double_output(input));
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%OptimizeFunctionOnNextCall(test_double_output);
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assertEquals(expected, test_double_output(input));
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}
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function test() {
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// Ensure that a negative zero coming from Math.trunc is properly handled
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// by other operations.
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function itrunc(x) {
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return 1 / Math.trunc(x);
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}
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assertEquals(Infinity, itrunc(0));
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assertEquals(-Infinity, itrunc(-0));
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assertEquals(Infinity, itrunc(Math.PI / 4));
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assertEquals(-Infinity, itrunc(-Math.sqrt(2) / 2));
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assertEquals(-Infinity, itrunc({valueOf: function() { return "-0.1"; }}));
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%OptimizeFunctionOnNextCall(itrunc);
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testTrunc(100, 100);
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testTrunc(-199, -199);
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testTrunc(100, 100.1);
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testTrunc(4503599627370495.0, 4503599627370495.0);
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testTrunc(4503599627370496.0, 4503599627370496.0);
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testTrunc(-4503599627370495.0, -4503599627370495.0);
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testTrunc(-4503599627370496.0, -4503599627370496.0);
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testTrunc(9007199254740991.0, 9007199254740991.0);
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testTrunc(-9007199254740991.0, -9007199254740991.0);
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testTrunc(0, []);
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testTrunc(1, [1]);
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testTrunc(-100, [-100.1]);
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testTrunc(-100, {toString: function() { return "-100.3"; }});
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testTrunc(10, {toString: function() { return 10.1; }});
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testTrunc(-1, {valueOf: function() { return -1.1; }});
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testTrunc(-Infinity, -Infinity);
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testTrunc(Infinity, Infinity);
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testTrunc(-Infinity, "-Infinity");
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testTrunc(Infinity, "Infinity");
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assertTrue(isNaN(Math.trunc("abc")));
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assertTrue(isNaN(Math.trunc({})));
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assertTrue(isNaN(Math.trunc([1, 1])));
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}
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// Test in a loop to cover the custom IC and GC-related issues.
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for (var i = 0; i < 10; i++) {
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test();
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new Array(i * 10000);
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}
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