115 lines
4.8 KiB
C
115 lines
4.8 KiB
C
/***************************************************************************
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Copyright (c) 2020, 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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#include "common.h"
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#include <math.h>
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#if !defined(DOUBLE)
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#define VSETVL(n) RISCV_RVV(vsetvl_e32m8)(n)
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#define VSETVL_MAX RISCV_RVV(vsetvlmax_e32m1)()
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#define FLOAT_V_T vfloat32m8_t
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#define FLOAT_V_T_M1 vfloat32m1_t
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#define VLEV_FLOAT RISCV_RVV(vle32_v_f32m8)
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#define VLSEV_FLOAT RISCV_RVV(vlse32_v_f32m8)
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#define VFREDSUMVS_FLOAT RISCV_RVV(vfredusum_vs_f32m8_f32m1)
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#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f32m8)
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#define VFMVVF_FLOAT_M1 RISCV_RVV(vfmv_v_f_f32m1)
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#define VFADDVV_FLOAT RISCV_RVV(vfadd_vv_f32m8)
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#else
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#define VSETVL(n) RISCV_RVV(vsetvl_e64m8)(n)
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#define VSETVL_MAX RISCV_RVV(vsetvlmax_e64m1)()
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#define FLOAT_V_T vfloat64m8_t
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#define FLOAT_V_T_M1 vfloat64m1_t
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#define VLEV_FLOAT RISCV_RVV(vle64_v_f64m8)
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#define VLSEV_FLOAT RISCV_RVV(vlse64_v_f64m8)
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#define VFREDSUMVS_FLOAT RISCV_RVV(vfredusum_vs_f64m8_f64m1)
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#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f64m8)
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#define VFMVVF_FLOAT_M1 RISCV_RVV(vfmv_v_f_f64m1)
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#define VFADDVV_FLOAT RISCV_RVV(vfadd_vv_f64m8)
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#endif
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
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{
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BLASLONG i=0, j=0;
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BLASLONG ix=0;
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FLOAT asumf=0.0;
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if (n <= 0 || inc_x <= 0) return(asumf);
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unsigned int gvl = 0;
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FLOAT_V_T v0, v1, v_sum;
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FLOAT_V_T_M1 v_res;
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gvl = VSETVL_MAX;
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v_res = VFMVVF_FLOAT_M1(0, gvl);
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if(inc_x == 1){
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gvl = VSETVL(n);
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if(gvl <= n/2){
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v_sum = VFMVVF_FLOAT(0, gvl);
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for(i=0,j=0; i<n/(gvl*2); i++){
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v0 = VLEV_FLOAT(&x[j], gvl);
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v_sum = VFADDVV_FLOAT(v_sum, v0, gvl);
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v1 = VLEV_FLOAT(&x[j+gvl], gvl);
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v_sum = VFADDVV_FLOAT(v_sum, v1, gvl);
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j += gvl * 2;
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}
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v_res = VFREDSUMVS_FLOAT(v_sum, v_res, gvl);
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}
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for(;j<n;){
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gvl = VSETVL(n-j);
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v0 = VLEV_FLOAT(&x[j], gvl);
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v_res = VFREDSUMVS_FLOAT(v0, v_res, gvl);
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j += gvl;
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}
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}else{
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gvl = VSETVL(n);
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unsigned int stride_x = inc_x * sizeof(FLOAT);
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if(gvl <= n/2){
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v_sum = VFMVVF_FLOAT(0, gvl);
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BLASLONG inc_xv = inc_x * gvl;
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for(i=0,j=0; i<n/(gvl*2); i++){
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v0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
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v_sum = VFADDVV_FLOAT(v_sum, v0, gvl);
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v1 = VLSEV_FLOAT(&x[ix+inc_xv], stride_x, gvl);
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v_sum = VFADDVV_FLOAT(v_sum, v1, gvl);
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j += gvl * 2;
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inc_xv += inc_xv * 2;
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}
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v_res = VFREDSUMVS_FLOAT(v_sum, v_res, gvl);
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}
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for(;j<n;){
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gvl = VSETVL(n-j);
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v0 = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
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v_res = VFREDSUMVS_FLOAT(v0, v_res, gvl);
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j += gvl;
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}
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}
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asumf = EXTRACT_FLOAT(v_res);
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return(asumf);
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}
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