Vc/avx/const_data.h

0001 /*  This file is part of the Vc library. {{{
0002 Copyright © 2012-2015 Matthias Kretz <kretz@kde.org>
0003
0004 Redistribution and use in source and binary forms, with or without
0005 modification, are permitted provided that the following conditions are met:
0006     * Redistributions of source code must retain the above copyright
0007       notice, this list of conditions and the following disclaimer.
0008     * Redistributions in binary form must reproduce the above copyright
0009       notice, this list of conditions and the following disclaimer in the
0010       documentation and/or other materials provided with the distribution.
0011     * Neither the names of contributing organizations nor the
0012       names of its contributors may be used to endorse or promote products
0013       derived from this software without specific prior written permission.
0014
0015 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
0016 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
0017 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
0018 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
0019 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
0020 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
0021 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
0022 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0023 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0024 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0025
0026 }}}*/
0027
0028 #ifndef VC_AVX_CONST_DATA_H_
0029 #define VC_AVX_CONST_DATA_H_
0030
0031 #include "../common/data.h"
0032 #include "macros.h"
0033
0034 namespace Vc_VERSIONED_NAMESPACE
0035 {
0036 namespace AVX
0037 {
0038
0039 alignas(64) extern const unsigned int   _IndexesFromZero32[ 8];
0040 alignas(16) extern const unsigned short _IndexesFromZero16[16];
0041 alignas(16) extern const unsigned char  _IndexesFromZero8 [32];
0042
0043 struct alignas(64) c_general
0044 {
0045     static const float oneFloat;
0046     static const unsigned int absMaskFloat[2];
0047     static const unsigned int signMaskFloat[2];
0048     static const unsigned int highMaskFloat;
0049     static const unsigned short minShort[2];
0050     static const unsigned short one16[2];
0051     static const float _2power31;
0052     static const double oneDouble;
0053     static const unsigned long long frexpMask;
0054     static const unsigned long long highMaskDouble;
0055 };
0056
0057 template<typename T> struct c_trig
0058 {
0059     alignas(64) static const T data[];
0060 };
0061 #ifndef Vc_MSVC
0062 template <> alignas(64) const float c_trig<float>::data[];
0063 template <> alignas(64) const double c_trig<double>::data[];
0064 #endif
0065
0066 template<typename T> struct c_log
0067 {
0068     typedef float floatAlias Vc_MAY_ALIAS;
0069     static Vc_ALWAYS_INLINE float d(int i) { return *reinterpret_cast<const floatAlias *>(&data[i]); }
0070     alignas(64) static const unsigned int data[21];
0071 };
0072 #ifndef Vc_MSVC
0073 template<> alignas(64) const unsigned int c_log<float>::data[21];
0074 #endif
0075
0076 template<> struct c_log<double>
0077 {
0078     enum VectorSize { Size = 16 / sizeof(double) };
0079     typedef double doubleAlias Vc_MAY_ALIAS;
0080     static Vc_ALWAYS_INLINE double d(int i) { return *reinterpret_cast<const doubleAlias *>(&data[i]); }
0081     alignas(64) static const unsigned long long data[21];
0082 };
0083
0084 }  // namespace AVX
0085 }  // namespace Vc
0086
0087 namespace Vc_VERSIONED_NAMESPACE
0088 {
0089 namespace AVX2
0090 {
0091     using AVX::_IndexesFromZero8;
0092     using AVX::_IndexesFromZero16;
0093     using AVX::_IndexesFromZero32;
0094     using AVX::c_general;
0095     using AVX::c_trig;
0096     using AVX::c_log;
0097 }  // namespace AVX2
0098 }  // namespace Vc
0099
0100 #endif // VC_AVX_CONST_DATA_H_