1/////////////////////////////////////////////////////////////////////////// 2// 3// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas 4// Digital Ltd. LLC 5// 6// All rights reserved. 7// 8// Redistribution and use in source and binary forms, with or without 9// modification, are permitted provided that the following conditions are 10// met: 11// * Redistributions of source code must retain the above copyright 12// notice, this list of conditions and the following disclaimer. 13// * Redistributions in binary form must reproduce the above 14// copyright notice, this list of conditions and the following disclaimer 15// in the documentation and/or other materials provided with the 16// distribution. 17// * Neither the name of Industrial Light & Magic nor the names of 18// its contributors may be used to endorse or promote products derived 19// from this software without specific prior written permission. 20// 21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32// 33/////////////////////////////////////////////////////////////////////////// 34 35#ifndef INCLUDED_IMATHPLATFORM_H 36#define INCLUDED_IMATHPLATFORM_H 37 38//---------------------------------------------------------------------------- 39// 40// ImathPlatform.h 41// 42// This file contains functions and constants which aren't 43// provided by the system libraries, compilers, or includes on 44// certain platforms. 45// 46//---------------------------------------------------------------------------- 47 48#include <math.h> 49 50#ifndef M_PI 51 #define M_PI 3.14159265358979323846 52#endif 53 54#ifndef M_PI_2 55 #define M_PI_2 1.57079632679489661923 // pi/2 56#endif 57 58 59//----------------------------------------------------------------------------- 60// 61// Some, but not all, C++ compilers support the C99 restrict 62// keyword or some variant of it, for example, __restrict. 63// 64//----------------------------------------------------------------------------- 65 66#if defined __GNUC__ 67 68 // 69 // supports __restrict 70 // 71 72 #define IMATH_RESTRICT __restrict 73 74#elif defined (__INTEL_COMPILER) || \ 75 defined(__ICL) || \ 76 defined(__ICC) || \ 77 defined(__ECC) 78 79 // 80 // supports restrict 81 // 82 83 #define IMATH_RESTRICT restrict 84 85#elif defined __sgi 86 87 // 88 // supports restrict 89 // 90 91 #define IMATH_RESTRICT restrict 92 93#elif defined _MSC_VER 94 95 // 96 // supports __restrict 97 // 98 99// #define IMATH_RESTRICT __restrict 100 #define IMATH_RESTRICT 101 102#else 103 104 // 105 // restrict / __restrict not supported 106 // 107 108 #define IMATH_RESTRICT 109 110#endif 111 112#endif // INCLUDED_IMATHPLATFORM_H 113