62 lines
2.8 KiB
C
62 lines
2.8 KiB
C
/* isequald2 - for each of two double slots, if x = y return a mask of ones, else zero
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Copyright (C) 2006, 2007 Sony Computer Entertainment Inc.
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All rights reserved.
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Redistribution and use in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the Sony Computer Entertainment Inc nor the names
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of its contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ___SIMD_MATH_ISEQUALD2_H___
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#define ___SIMD_MATH_ISEQUALD2_H___
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#include <simdmath.h>
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#include <spu_intrinsics.h>
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#include <simdmath/isnand2.h>
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static inline vector unsigned long long
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_isequald2 (vector double x, vector double y)
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{
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vec_uchar16 even = (vec_uchar16)(vec_uint4){ 0x00010203, 0x00010203, 0x08090a0b, 0x08090a0b };
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vec_uchar16 odd = (vec_uchar16)(vec_uint4){ 0x04050607, 0x04050607, 0x0c0d0e0f, 0x0c0d0e0f };
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vec_uchar16 swapEvenOdd = (vec_uchar16)(vec_uint4){ 0x04050607, 0x00010203, 0x0c0d0e0f, 0x08090a0b };
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vec_ullong2 sign = spu_splats(0x8000000000000000ull);
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vec_uint4 cmpeq_i, cmpeq_i_even, cmpeq_i_odd;
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vec_ullong2 bothzero;
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cmpeq_i = spu_cmpeq( (vec_int4)x, (vec_int4)y );
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cmpeq_i_even = spu_shuffle( cmpeq_i, cmpeq_i, even );
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cmpeq_i_odd = spu_shuffle( cmpeq_i, cmpeq_i, odd );
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bothzero = spu_andc( spu_or( (vec_ullong2)x, (vec_ullong2)y ), sign );
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bothzero = (vec_ullong2)spu_cmpeq( (vec_uint4)bothzero, 0U );
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bothzero = spu_and( bothzero, spu_shuffle( bothzero, bothzero, swapEvenOdd ) );
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return spu_andc( spu_or( (vec_ullong2)spu_and( cmpeq_i_even, cmpeq_i_odd), bothzero),
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spu_or( _isnand2( x ), _isnand2( y ) ) );
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}
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#endif
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