62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
/*
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Copyright (c) 2012, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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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 Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <math.h>
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void
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xyzSumAOS(float *a, int count, float *zeros, float *result) {
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float xsum = 0, ysum = 0, zsum = 0;
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for (int i = 0; i < count; i += 3) {
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xsum += a[i];
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ysum += a[i+1];
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zsum += a[i+2];
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}
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result[0] = xsum;
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result[1] = ysum;
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result[2] = zsum;
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}
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void
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xyzSumSOA(float *a, int count, float *zeros, float *result) {
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float xsum = 0, ysum = 0, zsum = 0;
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for (int i = 0; i < count/3; ++i) {
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float *p = a + (i >> 3) * 24 + (i & 7);
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xsum += p[0];
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ysum += p[8];
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zsum += p[16];
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}
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result[0] = xsum;
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result[1] = ysum;
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result[2] = zsum;
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}
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