// Copyright 2013 the V8 project authors. All rights reserved. // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions // are met: // 1. Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // 2. 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. // // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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. description( "This test checks that n % 0 doesn't crash with a floating-point exception." ); shouldBe("2 % 0", "NaN"); var n = 2; shouldBe("n % 0", "NaN"); function f() { return 2 % 0; } shouldBe("f()", "NaN"); function g() { var n = 2; return n % 0; } shouldBe("g()", "NaN"); // Test that reusing a floating point value after use in a modulus works correctly. function nonSpeculativeModReuseInner(argument, o1, o2) { // The + operator on objects is a reliable way to avoid the speculative JIT path for now at least. o1 + o2; var knownDouble = argument - 0; return knownDouble % 1 + knownDouble; } function nonSpeculativeModReuse(argument) { return nonSpeculativeModReuseInner(argument, {}, {}); } shouldBe("nonSpeculativeModReuse(0.5)", "1");