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63 lines
2.2 KiB
63 lines
2.2 KiB
12 years ago
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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//
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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
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// are met:
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// 1. 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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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY 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 OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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description(
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"This test checks that n % 0 doesn't crash with a floating-point exception."
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);
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shouldBe("2 % 0", "NaN");
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var n = 2;
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shouldBe("n % 0", "NaN");
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function f()
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{
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return 2 % 0;
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}
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shouldBe("f()", "NaN");
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function g()
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{
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var n = 2;
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return n % 0;
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}
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shouldBe("g()", "NaN");
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// Test that reusing a floating point value after use in a modulus works correctly.
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function nonSpeculativeModReuseInner(argument, o1, o2)
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{
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// The + operator on objects is a reliable way to avoid the speculative JIT path for now at least.
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o1 + o2;
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var knownDouble = argument - 0;
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return knownDouble % 1 + knownDouble;
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}
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function nonSpeculativeModReuse(argument)
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{
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return nonSpeculativeModReuseInner(argument, {}, {});
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}
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shouldBe("nonSpeculativeModReuse(0.5)", "1");
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