/* * Copyright (C) 2006 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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. */ #include <math.h> #if PLATFORM(WIN) #include <xmath.h> #if HAVE(FLOAT_H) #include <float.h> #endif inline bool isinf(double num) { return !_finite(num) && !_isnan(num); } inline bool isnan(double num) { return _isnan(num); } inline long lround(double num) { return num > 0 ? num + 0.5 : ceil(num - 0.5); } inline long lroundf(float num) { return num > 0 ? num + 0.5f : ceilf(num - 0.5f); } inline double round(double num) { return num > 0 ? floor(num + 0.5) : ceil(num - 0.5); } inline float roundf(float num) { return num > 0 ? floorf(num + 0.5f) : ceilf(num - 0.5f); } inline bool signbit(double num) { return _copysign(1.0, num) < 0; } #if COMPILER(MSVC) // Work around a bug in the Microsoft CRT, where fmod(x, +-infinity) yields NaN instead of x. inline double wtf_fmod(double x, double y) { return (!isinf(x) && isinf(y)) ? x : fmod(x, y); } #define fmod(x, y) wtf_fmod(x, y) #endif #endif