106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
/***************************************************************************
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Copyright (c) 2013, The OpenBLAS Project
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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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1. 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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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived 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 OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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/**************************************************************************************
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* trivial copy of asum.c with the ABS() removed *
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**************************************************************************************/
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#include "common.h"
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#include "../simd/intrin.h"
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#include <math.h>
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
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{
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BLASLONG i = 0;
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FLOAT sumf = 0.0;
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if (n <= 0 || inc_x <= 0)
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return (sumf);
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n *= inc_x;
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if (inc_x == 1)
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{
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#if V_SIMD && (!defined(DOUBLE) || (defined(DOUBLE) && V_SIMD_F64 && V_SIMD > 128))
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#ifdef DOUBLE
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const int vstep = v_nlanes_f64;
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const int unrollx4 = n & (-vstep * 4);
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const int unrollx = n & -vstep;
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v_f64 vsum0 = v_zero_f64();
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v_f64 vsum1 = v_zero_f64();
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v_f64 vsum2 = v_zero_f64();
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v_f64 vsum3 = v_zero_f64();
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for (; i < unrollx4; i += vstep * 4)
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{
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vsum0 = v_add_f64(vsum0, v_loadu_f64(x + i));
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vsum1 = v_add_f64(vsum1, v_loadu_f64(x + i + vstep));
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vsum2 = v_add_f64(vsum2, v_loadu_f64(x + i + vstep * 2));
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vsum3 = v_add_f64(vsum3, v_loadu_f64(x + i + vstep * 3));
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}
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vsum0 = v_add_f64(
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v_add_f64(vsum0, vsum1), v_add_f64(vsum2, vsum3));
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for (; i < unrollx; i += vstep)
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{
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vsum0 = v_add_f64(vsum0, v_loadu_f64(x + i));
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}
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sumf = v_sum_f64(vsum0);
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#else
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const int vstep = v_nlanes_f32;
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const int unrollx4 = n & (-vstep * 4);
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const int unrollx = n & -vstep;
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v_f32 vsum0 = v_zero_f32();
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v_f32 vsum1 = v_zero_f32();
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v_f32 vsum2 = v_zero_f32();
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v_f32 vsum3 = v_zero_f32();
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for (; i < unrollx4; i += vstep * 4)
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{
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vsum0 = v_add_f32(vsum0, v_loadu_f32(x + i));
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vsum1 = v_add_f32(vsum1, v_loadu_f32(x + i + vstep));
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vsum2 = v_add_f32(vsum2, v_loadu_f32(x + i + vstep * 2));
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vsum3 = v_add_f32(vsum3, v_loadu_f32(x + i + vstep * 3));
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}
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vsum0 = v_add_f32(
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v_add_f32(vsum0, vsum1), v_add_f32(vsum2, vsum3));
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for (; i < unrollx; i += vstep)
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{
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vsum0 = v_add_f32(vsum0, v_loadu_f32(x + i));
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}
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sumf = v_sum_f32(vsum0);
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#endif
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#else
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int n1 = n & -4;
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for (; i < n1; i += 4)
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{
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sumf += x[i] + x[i + 1] + x[i + 2] + x[i + 3];
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}
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#endif
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}
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while (i < n)
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{
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sumf += x[i];
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i += inc_x;
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}
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return (sumf);
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}
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