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random_well512a_simd
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Inline the classes.

This commit is contained in:
Peter Pettersson 2013-04-22 20:42:45 +02:00
parent d37ddc7f29
commit d2926fc472
6 changed files with 136 additions and 189 deletions
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82
RandomWELL512a.cpp
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@ -1,82 +0,0 @@
// Copyright (c) 2013, Peter Pettersson
// 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
//
// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies,
// either expressed or implied, of the FreeBSD Project.
#include "RandomWELL512a.h"
#include <stdlib.h> // Needed for rand().
#include <memory.h> // Needed for memcpy().
RandomWELL512a::RandomWELL512a(int seed)
: index(0)
{
srand(seed);
for (int i = 0; i < 16; ++i)
state[i] = rand();
}
RandomWELL512a::RandomWELL512a(unsigned *seed)
: index(0)
{
memcpy(state, seed, 16 * sizeof(unsigned));
}
unsigned RandomWELL512a::GetUnsigned()
{
#define MUTATE_LEFT(value, shift) value ^ (value << shift)
#define MUTATE_RIGHT(value, shift) value ^ (value >> shift)
#define MUTATE_LEFT_MIX(value, shift, mix) value ^ ((value << shift) & mix)
unsigned index_9 = (index + 9) & 15;
unsigned index_13 = (index + 13) & 15;
unsigned index_15 = (index + 15) & 15;
unsigned state_index = state[index];
unsigned state_index_9 = state[index_9];
unsigned state_index_13 = state[index_13];
unsigned state_index_15 = state[index_15];
unsigned z1 = MUTATE_LEFT(state_index, 16);
z1 ^= MUTATE_LEFT(state_index_13, 15);
unsigned z2 = MUTATE_RIGHT(state_index_9, 11);
unsigned result0 = z1 ^ z2;
state[index] = result0;
unsigned result1 = MUTATE_LEFT(state_index_15, 2);
result1 ^= MUTATE_LEFT(z1, 18);;
result1 ^= z2 << 28;
result1 ^= MUTATE_LEFT_MIX(result0, 5, 0xda442d24U);
index = index_15;
state[index] = result1;
return result1;
#undef MUTATE_LEFT
#undef MUTATE_RIGHT
#undef MUTATE_LEFT_MIX
}

68
RandomWELL512a.h
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@ -28,6 +28,9 @@
#ifndef RANDOM_WELL512A_H
#define RANDOM_WELL512A_H
#include <stdlib.h> // Needed for rand().
#include <memory.h> // Needed for memcpy().
class RandomWELL512a
{
public:
@ -36,15 +39,70 @@ public:
unsigned GetUnsigned();
double GetDouble()
{
const double kToFloat = 2.32830643653869628906e-10;
return GetUnsigned() * kToFloat;
}
double GetDouble();
private:
unsigned state[16];
unsigned index;
};
inline RandomWELL512a::RandomWELL512a(int seed)
: index(0)
{
srand(seed);
for (int i = 0; i < 16; ++i)
state[i] = rand();
}
inline RandomWELL512a::RandomWELL512a(unsigned *seed)
: index(0)
{
memcpy(state, seed, 16 * sizeof(unsigned));
}
inline unsigned RandomWELL512a::GetUnsigned()
{
#define MUTATE_LEFT(value, shift) value ^ (value << shift)
#define MUTATE_RIGHT(value, shift) value ^ (value >> shift)
#define MUTATE_LEFT_MIX(value, shift, mix) value ^ ((value << shift) & mix)
unsigned index_9 = (index + 9) & 15;
unsigned index_13 = (index + 13) & 15;
unsigned index_15 = (index + 15) & 15;
unsigned state_index = state[index];
unsigned state_index_9 = state[index_9];
unsigned state_index_13 = state[index_13];
unsigned state_index_15 = state[index_15];
unsigned z1 = MUTATE_LEFT(state_index, 16);
z1 ^= MUTATE_LEFT(state_index_13, 15);
unsigned z2 = MUTATE_RIGHT(state_index_9, 11);
unsigned result0 = z1 ^ z2;
state[index] = result0;
unsigned result1 = MUTATE_LEFT(state_index_15, 2);
result1 ^= MUTATE_LEFT(z1, 18);;
result1 ^= z2 << 28;
result1 ^= MUTATE_LEFT_MIX(result0, 5, 0xda442d24U);
index = index_15;
state[index] = result1;
return result1;
#undef MUTATE_LEFT
#undef MUTATE_RIGHT
#undef MUTATE_LEFT_MIX
}
inline double RandomWELL512a::GetDouble()
{
const double kToFloat = 2.32830643653869628906e-10;
return GetUnsigned() * kToFloat;
}
#endif // RANDOM_WELL512A_H

82
RandomWELL512a_SSE2.cpp
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@ -1,82 +0,0 @@
// Copyright (c) 2013, Peter Pettersson
// 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
//
// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies,
// either expressed or implied, of the FreeBSD Project.
#include "RandomWELL512a_SSE2.h"
#include <stdlib.h> // Needed for rand().
RandomWELL512a_SSE2::RandomWELL512a_SSE2(int seed)
: index(0)
, resultIndex(4)
{
srand(seed);
for (int i = 0; i < 16; ++i)
xmm_state[i] = _mm_set_epi32(rand(), rand(), rand(), rand());
}
RandomWELL512a_SSE2::RandomWELL512a_SSE2(unsigned *seed)
: index(0)
, resultIndex(4)
{
for (int i = 0; i < 16; ++i)
xmm_state[i] = _mm_set_epi32(seed[i + 48], seed[i + 32], seed[i + 16], seed[i]);
}
void RandomWELL512a_SSE2::GetUnsigned4(unsigned *result4)
{
unsigned index_15 = (index + 15) & 15;
__m128i state_index = xmm_state[index];
__m128i state_index_9 = xmm_state[(index + 9) & 15];
__m128i state_index_13 = xmm_state[(index + 13) & 15];
__m128i state_index_15 = xmm_state[index_15];
const __m128i kMix = _mm_set1_epi32(0xda442d24);
__m128i left = _mm_xor_si128(state_index, _mm_slli_epi32(state_index, 16));
__m128i right = _mm_xor_si128(state_index_13, _mm_slli_epi32(state_index_13, 15));
__m128i z1 = _mm_xor_si128(left, right);
__m128i z2 = _mm_xor_si128(state_index_9, _mm_srli_epi32(state_index_9, 11));
__m128i result0 = _mm_xor_si128(z1, z2);
xmm_state[index] = result0;
__m128i result1 = _mm_xor_si128(state_index_15, _mm_slli_epi32(state_index_15, 2));
result1 = _mm_xor_si128(result1, _mm_xor_si128(z1, _mm_slli_epi32(z1, 18)));
result1 = _mm_xor_si128(result1, _mm_slli_epi32(z2, 28));
result1 = _mm_xor_si128(result1, _mm_xor_si128(result0, _mm_and_si128(_mm_slli_epi32(result0, 5), kMix)));
index = index_15;
xmm_state[index] = result1;
_mm_storeu_si128((__m128i *)result4, result1);
}
void RandomWELL512a_SSE2::GetDouble4(double *result4)
{
unsigned unsignedResult[4];
GetUnsigned4(unsignedResult);
const double kToFloat = 2.32830643653869628906e-10;
for (unsigned loop = 0; loop < 4; ++loop)
result4[loop] = unsignedResult[loop] * kToFloat;
}

89
RandomWELL512a_SSE2.h
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@ -29,6 +29,7 @@
#define RANDOM_WELL512A_SSE2_H
#include <emmintrin.h> // SSE2 instrinsics.
#include <stdlib.h> // Needed for rand().
class RandomWELL512a_SSE2
{
@ -36,22 +37,8 @@ public:
RandomWELL512a_SSE2(int seed);
RandomWELL512a_SSE2(unsigned *seed);
unsigned GetUnsigned()
{
if (resultIndex < 4)
return result[resultIndex++];
GetUnsigned4(result);
resultIndex = 1;
return result[0];
}
double GetDouble()
{
const double kToFloat = 2.32830643653869628906e-10;
return GetUnsigned() * kToFloat;
}
unsigned GetUnsigned();
double GetDouble();
void GetUnsigned4(unsigned *result4);
void GetDouble4(double *result4);
@ -65,4 +52,74 @@ private:
unsigned resultIndex;
};
inline RandomWELL512a_SSE2::RandomWELL512a_SSE2(int seed)
: index(0)
, resultIndex(4)
{
srand(seed);
for (int i = 0; i < 16; ++i)
xmm_state[i] = _mm_set_epi32(rand(), rand(), rand(), rand());
}
inline RandomWELL512a_SSE2::RandomWELL512a_SSE2(unsigned *seed)
: index(0)
, resultIndex(4)
{
for (int i = 0; i < 16; ++i)
xmm_state[i] = _mm_set_epi32(seed[i + 48], seed[i + 32], seed[i + 16], seed[i]);
}
inline unsigned RandomWELL512a_SSE2::GetUnsigned()
{
if (resultIndex < 4)
return result[resultIndex++];
GetUnsigned4(result);
resultIndex = 1;
return result[0];
}
inline double RandomWELL512a_SSE2::GetDouble()
{
const double kToFloat = 2.32830643653869628906e-10;
return GetUnsigned() * kToFloat;
}
inline void RandomWELL512a_SSE2::GetUnsigned4(unsigned *result4)
{
unsigned index_15 = (index + 15) & 15;
__m128i state_index = xmm_state[index];
__m128i state_index_9 = xmm_state[(index + 9) & 15];
__m128i state_index_13 = xmm_state[(index + 13) & 15];
__m128i state_index_15 = xmm_state[index_15];
const __m128i kMix = _mm_set1_epi32(0xda442d24);
__m128i left = _mm_xor_si128(state_index, _mm_slli_epi32(state_index, 16));
__m128i right = _mm_xor_si128(state_index_13, _mm_slli_epi32(state_index_13, 15));
__m128i z1 = _mm_xor_si128(left, right);
__m128i z2 = _mm_xor_si128(state_index_9, _mm_srli_epi32(state_index_9, 11));
__m128i result0 = _mm_xor_si128(z1, z2);
xmm_state[index] = result0;
__m128i result1 = _mm_xor_si128(state_index_15, _mm_slli_epi32(state_index_15, 2));
result1 = _mm_xor_si128(result1, _mm_xor_si128(z1, _mm_slli_epi32(z1, 18)));
result1 = _mm_xor_si128(result1, _mm_slli_epi32(z2, 28));
result1 = _mm_xor_si128(result1, _mm_xor_si128(result0, _mm_and_si128(_mm_slli_epi32(result0, 5), kMix)));
index = index_15;
xmm_state[index] = result1;
_mm_storeu_si128((__m128i *)result4, result1);
}
inline void RandomWELL512a_SSE2::GetDouble4(double *result4)
{
unsigned unsignedResult[4];
GetUnsigned4(unsignedResult);
const double kToFloat = 2.32830643653869628906e-10;
for (unsigned loop = 0; loop < 4; ++loop)
result4[loop] = unsignedResult[loop] * kToFloat;
}
#endif // RANDOM_WELL512A_SSE2_H

2
VS2012/well512_simd.vcxproj
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@ -148,8 +148,6 @@
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="..\main.cpp" />
<ClCompile Include="..\RandomWELL512a.cpp" />
<ClCompile Include="..\RandomWELL512a_SSE2.cpp" />
<ClCompile Include="..\WELL512a.cpp" />
</ItemGroup>
<ItemGroup>

2
VS2012/well512_simd.vcxproj.filters
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@ -2,8 +2,6 @@
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<ClCompile Include="..\main.cpp" />
<ClCompile Include="..\RandomWELL512a.cpp" />
<ClCompile Include="..\RandomWELL512a_SSE2.cpp" />
<ClCompile Include="..\WELL512a.cpp" />
</ItemGroup>
<ItemGroup>