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random_well512a_simd
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Minor cleanup.

This commit is contained in:
Peter Pettersson 2013-04-22 22:14:28 +02:00
parent 542cb9a746
commit df14bb6ae5
4 changed files with 16 additions and 17 deletions
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10
RandomWELL512a.h
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@ -28,8 +28,8 @@
#ifndef RANDOM_WELL512A_H
#define RANDOM_WELL512A_H
#include <stdlib.h> // Needed for rand().
#include <memory.h> // Needed for memcpy().
#include <stdlib.h> // Needed for rand().
#include <memory.h> // Needed for memcpy().
class RandomWELL512a
{
@ -63,9 +63,9 @@ inline RandomWELL512a::RandomWELL512a(unsigned *seed)
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)
#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;

16
RandomWELL512a_SSE2.h
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@ -28,8 +28,8 @@
#ifndef RANDOM_WELL512A_SSE2_H
#define RANDOM_WELL512A_SSE2_H
#include <emmintrin.h> // SSE2 instrinsics.
#include <stdlib.h> // Needed for rand().
#include <emmintrin.h> // SSE2 instrinsics.
#include <stdlib.h> // Needed for rand().
class RandomWELL512a_SSE2
{
@ -86,12 +86,12 @@ inline double RandomWELL512a_SSE2::GetDouble()
inline void RandomWELL512a_SSE2::GetUnsigned4(unsigned *result4)
{
unsigned index_15 = (index + 15) & 15;
__m128i state_index = state[index];
__m128i state_index_9 = state[(index + 9) & 15];
__m128i state_index_13 = state[(index + 13) & 15];
__m128i state_index_15 = state[index_15];
const __m128i kMix = _mm_set1_epi32(0xda442d24);
unsigned index_15 = (index + 15) & 15;
__m128i state_index = state[index];
__m128i state_index_9 = state[(index + 9) & 15];
__m128i state_index_13 = state[(index + 13) & 15];
__m128i state_index_15 = 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));

5
gcc/Makefile
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@ -92,8 +92,8 @@ cleanall:
help:
@echo "BUILD = Build mode. One of:"
@echo " debug (default)"
@echo " release (optimizations)"
@echo " debug (no optimizations)"
@echo " release (optimizations, the default)"
@echo "APPS = Applications to build. Defaults to all."
@echo "VERBOSE = Full output from commands if set."
@ -107,7 +107,6 @@ $(EXES):
$(BUILD_DIR)/%.a:
@mkdir -p $(@D)
$(HUSH_GENERATE) $(AR) $(ARFLAGS) $@ $^
# $(HUSH_GENERATE) $(AR) $(ARFLAGS) $@ $^ 2> /dev/null
$(BUILD_DIR)/%.o: $(SRC_ROOT)/%.c
@mkdir -p $(@D)

2
readme.txt
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@ -29,7 +29,7 @@ Original C 0.223 0.19
=== REQUIREMENTS ===
An SSE2 capable CPU (i.e. AMD Athlon 64, Intel Pentium 4 or newer.
An SSE2 capable CPU (i.e. AMD Athlon 64, Intel Pentium 4 or newer).
It's been tested with Visual Studio 2012 and gcc 4.6.3 but should compile
and run on other compilers as well.