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00001 00002 // 00003 // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas 00004 // Digital Ltd. LLC 00005 // 00006 // All rights reserved. 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are 00010 // met: 00011 // * Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // * Redistributions in binary form must reproduce the above 00014 // copyright notice, this list of conditions and the following disclaimer 00015 // in the documentation and/or other materials provided with the 00016 // distribution. 00017 // * Neither the name of Industrial Light & Magic nor the names of 00018 // its contributors may be used to endorse or promote products derived 00019 // from this software without specific prior written permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00034 00035 #ifndef INCLUDED_IMATHPLATFORM_H 00036 #define INCLUDED_IMATHPLATFORM_H 00037 00038 //---------------------------------------------------------------------------- 00039 // 00040 // ImathPlatform.h 00041 // 00042 // This file contains functions and constants which aren't 00043 // provided by the system libraries, compilers, or includes on 00044 // certain platforms. 00045 // 00046 //---------------------------------------------------------------------------- 00047 00048 #include <math.h> 00049 00050 #ifndef M_PI 00051 #define M_PI 3.14159265358979323846 00052 #endif 00053 00054 #ifndef M_PI_2 00055 #define M_PI_2 1.57079632679489661923 // pi/2 00056 #endif 00057 00058 00059 //----------------------------------------------------------------------------- 00060 // 00061 // Some, but not all, C++ compilers support the C99 restrict 00062 // keyword or some variant of it, for example, __restrict. 00063 // 00064 //----------------------------------------------------------------------------- 00065 00066 #if defined __GNUC__ 00067 00068 // 00069 // supports __restrict 00070 // 00071 00072 #define IMATH_RESTRICT __restrict 00073 00074 #elif defined (__INTEL_COMPILER) || \ 00075 defined(__ICL) || \ 00076 defined(__ICC) || \ 00077 defined(__ECC) 00078 00079 // 00080 // supports restrict 00081 // 00082 00083 #define IMATH_RESTRICT restrict 00084 00085 #elif defined __sgi 00086 00087 // 00088 // supports restrict 00089 // 00090 00091 #define IMATH_RESTRICT restrict 00092 00093 #elif defined _MSC_VER 00094 00095 // 00096 // supports __restrict 00097 // 00098 00099 // #define IMATH_RESTRICT __restrict 00100 #define IMATH_RESTRICT 00101 00102 #else 00103 00104 // 00105 // restrict / __restrict not supported 00106 // 00107 00108 #define IMATH_RESTRICT 00109 00110 #endif 00111 00112 #endif // INCLUDED_IMATHPLATFORM_H