186 lines
7.5 KiB
C
186 lines
7.5 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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#if !defined(DOUBLE)
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#define VSETVL(n) vsetvl_e32m4(n)
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#define VSETVL_MAX vsetvlmax_e32m1()
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#define FLOAT_V_T vfloat32m4_t
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#define FLOAT_V_T_M1 vfloat32m1_t
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#define VFMVFS_FLOAT vfmv_f_s_f32m1_f32
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#define VLEV_FLOAT vle32_v_f32m4
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#define VLSEV_FLOAT vlse32_v_f32m4
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#define VFREDSUM_FLOAT vfredosum_vs_f32m4_f32m1
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#define VFMACCVV_FLOAT vfmacc_vv_f32m4
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#define VFMVVF_FLOAT vfmv_v_f_f32m4
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#define VFMVVF_FLOAT_M1 vfmv_v_f_f32m1
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#define VFDOTVV_FLOAT vfdot_vv_f32m4
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#else
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#define VSETVL(n) vsetvl_e64m4(n)
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#define VSETVL_MAX vsetvlmax_e64m1()
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#define FLOAT_V_T vfloat64m4_t
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#define FLOAT_V_T_M1 vfloat64m1_t
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#define VFMVFS_FLOAT vfmv_f_s_f64m1_f64
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#define VLEV_FLOAT vle64_v_f64m4
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#define VLSEV_FLOAT vlse64_v_f64m4
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#define VFREDSUM_FLOAT vfredusum_vs_f64m4_f64m1
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#define VFMACCVV_FLOAT vfmacc_vv_f64m4
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#define VFMVVF_FLOAT vfmv_v_f_f64m4
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#define VFMVVF_FLOAT_M1 vfmv_v_f_f64m1
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#define VFDOTVV_FLOAT vfdot_vv_f64m4
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#endif
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#if defined(DSDOT)
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double CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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#else
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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#endif
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{
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BLASLONG i=0, j=0;
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double dot = 0.0 ;
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if ( n < 1 ) return(dot);
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FLOAT_V_T vr, vx, vy;
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unsigned int gvl = 0;
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FLOAT_V_T_M1 v_res, v_z0;
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gvl = VSETVL_MAX;
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v_res = VFMVVF_FLOAT_M1(0, gvl);
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v_z0 = VFMVVF_FLOAT_M1(0, gvl);
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if(inc_x == 1 && inc_y == 1){
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gvl = VSETVL(n);
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vr = VFMVVF_FLOAT(0, gvl);
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for(i=0,j=0; i<n/gvl; i++){
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vx = VLEV_FLOAT(&x[j], gvl);
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vy = VLEV_FLOAT(&y[j], gvl);
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vr = VFMACCVV_FLOAT(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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//tail
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if(j < n){
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gvl = VSETVL(n-j);
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vx = VLEV_FLOAT(&x[j], gvl);
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vy = VLEV_FLOAT(&y[j], gvl);
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FLOAT_V_T vz = VFMVVF_FLOAT(0, gvl);
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//vr = VFDOTVV_FLOAT(vx, vy, gvl);
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vr = VFMACCVV_FLOAT(vz, vx, vy, gvl);
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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}else if(inc_y == 1){
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gvl = VSETVL(n);
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vr = VFMVVF_FLOAT(0, gvl);
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int stride_x = inc_x * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
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vy = VLEV_FLOAT(&y[j], gvl);
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vr = VFMACCVV_FLOAT(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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//tail
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if(j < n){
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gvl = VSETVL(n-j);
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vx = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
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vy = VLEV_FLOAT(&y[j], gvl);
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FLOAT_V_T vz = VFMVVF_FLOAT(0, gvl);
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//vr = VFDOTVV_FLOAT(vx, vy, gvl);
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vr = VFMACCVV_FLOAT(vz, vx, vy, gvl);
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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}else if(inc_x == 1){
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gvl = VSETVL(n);
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vr = VFMVVF_FLOAT(0, gvl);
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int stride_y = inc_y * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = VLEV_FLOAT(&x[j], gvl);
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vy = VLSEV_FLOAT(&y[j*inc_y], stride_y, gvl);
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vr = VFMACCVV_FLOAT(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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//tail
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if(j < n){
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gvl = VSETVL(n-j);
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vx = VLEV_FLOAT(&x[j], gvl);
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vy = VLSEV_FLOAT(&y[j*inc_y], stride_y, gvl);
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FLOAT_V_T vz = VFMVVF_FLOAT(0, gvl);
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//vr = VFDOTVV_FLOAT(vx, vy, gvl);
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vr = VFMACCVV_FLOAT(vz, vx, vy, gvl);
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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}else{
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gvl = VSETVL(n);
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vr = VFMVVF_FLOAT(0, gvl);
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int stride_x = inc_x * sizeof(FLOAT);
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int stride_y = inc_y * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
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vy = VLSEV_FLOAT(&y[j*inc_y], stride_y, gvl);
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vr = VFMACCVV_FLOAT(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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//tail
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if(j < n){
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gvl = VSETVL(n-j);
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vx = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
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vy = VLSEV_FLOAT(&y[j*inc_y], stride_y, gvl);
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FLOAT_V_T vz = VFMVVF_FLOAT(0, gvl);
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//vr = VFDOTVV_FLOAT(vx, vy, gvl);
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vr = VFMACCVV_FLOAT(vz, vx, vy, gvl);
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v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
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dot += (double)VFMVFS_FLOAT(v_res);
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}
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}
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return(dot);
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}
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