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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 THE COPYRIGHT
// OWNER 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.
// Flags: --allow-natives-syntax
var test_id = 0;
function testTrunc(expected, input) {
var test = new Function('n',
'"' + (test_id++) + '";return Math.trunc(n)');
assertEquals(expected, test(input));
assertEquals(expected, test(input));
assertEquals(expected, test(input));
%OptimizeFunctionOnNextCall(test);
assertEquals(expected, test(input));
var test_double_input = new Function(
'n',
'"' + (test_id++) + '";return Math.trunc(+n)');
assertEquals(expected, test_double_input(input));
assertEquals(expected, test_double_input(input));
assertEquals(expected, test_double_input(input));
%OptimizeFunctionOnNextCall(test_double_input);
assertEquals(expected, test_double_input(input));
var test_double_output = new Function(
'n',
'"' + (test_id++) + '";return Math.trunc(n) + -0.0');
assertEquals(expected, test_double_output(input));
assertEquals(expected, test_double_output(input));
assertEquals(expected, test_double_output(input));
%OptimizeFunctionOnNextCall(test_double_output);
assertEquals(expected, test_double_output(input));
}
function test() {
// Ensure that a negative zero coming from Math.trunc is properly handled
// by other operations.
function itrunc(x) {
return 1 / Math.trunc(x);
}
assertEquals(Infinity, itrunc(0));
assertEquals(-Infinity, itrunc(-0));
assertEquals(Infinity, itrunc(Math.PI / 4));
assertEquals(-Infinity, itrunc(-Math.sqrt(2) / 2));
assertEquals(-Infinity, itrunc({valueOf: function() { return "-0.1"; }}));
%OptimizeFunctionOnNextCall(itrunc);
testTrunc(100, 100);
testTrunc(-199, -199);
testTrunc(100, 100.1);
testTrunc(4503599627370495.0, 4503599627370495.0);
testTrunc(4503599627370496.0, 4503599627370496.0);
testTrunc(-4503599627370495.0, -4503599627370495.0);
testTrunc(-4503599627370496.0, -4503599627370496.0);
testTrunc(9007199254740991.0, 9007199254740991.0);
testTrunc(-9007199254740991.0, -9007199254740991.0);
testTrunc(0, []);
testTrunc(1, [1]);
testTrunc(-100, [-100.1]);
testTrunc(-100, {toString: function() { return "-100.3"; }});
testTrunc(10, {toString: function() { return 10.1; }});
testTrunc(-1, {valueOf: function() { return -1.1; }});
testTrunc(-Infinity, -Infinity);
testTrunc(Infinity, Infinity);
testTrunc(-Infinity, "-Infinity");
testTrunc(Infinity, "Infinity");
assertTrue(isNaN(Math.trunc("abc")));
assertTrue(isNaN(Math.trunc({})));
assertTrue(isNaN(Math.trunc([1, 1])));
}
// Test in a loop to cover the custom IC and GC-related issues.
for (var i = 0; i < 10; i++) {
test();
new Array(i * 10000);
}
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