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78 lines
2.9 KiB
JavaScript
78 lines
2.9 KiB
JavaScript
// Copyright 2009 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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function testBitNot(x, name) {
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// The VM constant folds so we use that to check the result.
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var expected = eval("~(" + x + ")");
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var actual = ~x;
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assertEquals(expected, actual, "x: " + name);
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// Test the path where we can overwrite the result. Use -
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// to avoid concatenating strings.
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expected = eval("~(" + x + " - 0.01)");
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actual = ~(x - 0.01);
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assertEquals(expected, actual, "x - 0.01: " + name);
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}
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testBitNot(0, 0);
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testBitNot(1, 1);
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testBitNot(-1, 1);
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testBitNot(100, 100);
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testBitNot(0x40000000, "0x40000000");
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testBitNot(0x7fffffff, "0x7fffffff");
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testBitNot(0x80000000, "0x80000000");
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testBitNot(2.2, 2.2);
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testBitNot(-2.3, -2.3);
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testBitNot(Infinity, "Infinity");
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testBitNot(NaN, "NaN");
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testBitNot(-Infinity, "-Infinity");
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testBitNot(0x40000000 + 0.12345, "float1");
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testBitNot(0x40000000 - 0.12345, "float2");
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testBitNot(0x7fffffff + 0.12345, "float3");
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testBitNot(0x7fffffff - 0.12345, "float4");
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testBitNot(0x80000000 + 0.12345, "float5");
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testBitNot(0x80000000 - 0.12345, "float6");
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testBitNot("0", "string0");
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testBitNot("2.3", "string2.3");
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testBitNot("-9.4", "string-9.4");
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// Try to test that we can deal with allocation failures in
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// the fast path and just use the slow path instead.
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function TryToGC() {
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var x = 0x40000000;
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// Put in an eval to foil Crankshaft.
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eval("");
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for (var i = 0; i < 1000000; i++) {
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assertEquals(~0x40000000, ~x);
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}
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}
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TryToGC();
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