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random_well512a_simd
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Get rid of macros.

This commit is contained in:
Peter Pettersson 2013-04-22 20:33:35 +02:00
parent dffa589dd3
commit 4d92f13bf0
1 changed files with 7 additions and 14 deletions
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21
RandomWELL512a_SSE2.cpp
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@ -48,11 +48,6 @@ RandomWELL512a_SSE2::RandomWELL512a_SSE2(unsigned *seed)
void RandomWELL512a_SSE2::GetUnsigned4(unsigned *result4)
{
// Calculations.
#define MUTATE_LEFT(value, shift) _mm_xor_si128(value, _mm_slli_epi32(value, shift))
#define MUTATE_RIGHT(value, shift) _mm_xor_si128(value, _mm_srli_epi32(value, shift))
#define MUTATE_LEFT_MIX(value, shift, mix) _mm_xor_si128(value, _mm_and_si128(_mm_slli_epi32(value, shift), mix))
unsigned index_15 = (index + 15) & 15;
__m128i state_index = xmm_state[index];
__m128i state_index_9 = xmm_state[(index + 9) & 15];
@ -60,23 +55,21 @@ void RandomWELL512a_SSE2::GetUnsigned4(unsigned *result4)
__m128i state_index_15 = xmm_state[index_15];
const __m128i kMix = _mm_set1_epi32(0xda442d24);
__m128i z1 = _mm_xor_si128(MUTATE_LEFT(state_index, 16), MUTATE_LEFT(state_index_13, 15));
__m128i z2 = MUTATE_RIGHT(state_index_9, 11);
__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 = MUTATE_LEFT(state_index_15, 2);
result1 = _mm_xor_si128(result1, MUTATE_LEFT(z1, 18));
__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, MUTATE_LEFT_MIX(result0, 5, kMix));
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);
#undef MUTATE_LEFT
#undef MUTATE_RIGHT
#undef MUTATE_LEFT_MIX
}
void RandomWELL512a_SSE2::GetDouble4(double *result4)