/* * Copyright (C) 2015 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. ``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 * 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. */ #ifndef MathCommon_h #define MathCommon_h #include "JITOperations.h" #ifndef JIT_OPERATION #define JIT_OPERATION #endif namespace JSC { double JIT_OPERATION operationMathPow(double x, double y) WTF_INTERNAL; inline int clz32(uint32_t number) { #if COMPILER(GCC) || COMPILER(CLANG) int zeroCount = 32; if (number) zeroCount = __builtin_clz(number); return zeroCount; #else int zeroCount = 0; for (int i = 31; i >= 0; i--) { if (!(number >> i)) zeroCount++; else break; } return zeroCount; #endif } extern "C" { double JIT_OPERATION jsRound(double value) REFERENCED_FROM_ASM WTF_INTERNAL; } } #endif // MathCommon_h