138 lines
5.5 KiB
C
138 lines
5.5 KiB
C
/***************************************************************************
|
|
Copyright (c) 2020, The OpenBLAS Project
|
|
All rights reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the
|
|
distribution.
|
|
3. Neither the name of the OpenBLAS project nor the names of
|
|
its contributors may be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************************/
|
|
|
|
#include "common.h"
|
|
#if !defined(DOUBLE)
|
|
#define VSETVL(n) vsetvl_e32m8(n)
|
|
#define VSETVL_MAX vsetvlmax_e32m1()
|
|
#define FLOAT_V_T vfloat32m8_t
|
|
#define FLOAT_V_T_M1 vfloat32m1_t
|
|
#define VFMVFS_FLOAT vfmv_f_s_f32m1_f32
|
|
#define VLEV_FLOAT vle_v_f32m8
|
|
#define VLSEV_FLOAT vlse_v_f32m8
|
|
#define VFREDSUM_FLOAT vfredusum_vs_f32m8_f32m1
|
|
#define VFMACCVV_FLOAT vfmacc_vv_f32m8
|
|
#define VFMVVF_FLOAT vfmv_v_f_f32m8
|
|
#define VFMVVF_FLOAT_M1 vfmv_v_f_f32m1
|
|
#define VFDOTVV_FLOAT vfdot_vv_f32m8
|
|
#define ABS fabsf
|
|
#else
|
|
#define VSETVL(n) vsetvl_e64m8(n)
|
|
#define VSETVL_MAX vsetvlmax_e64m1()
|
|
#define FLOAT_V_T vfloat64m8_t
|
|
#define FLOAT_V_T_M1 vfloat64m1_t
|
|
#define VFMVFS_FLOAT vfmv_f_s_f64m1_f64
|
|
#define VLEV_FLOAT vle_v_f64m8
|
|
#define VLSEV_FLOAT vlse_v_f64m8
|
|
#define VFREDSUM_FLOAT vfredusum_vs_f64m8_f64m1
|
|
#define VFMACCVV_FLOAT vfmacc_vv_f64m8
|
|
#define VFMVVF_FLOAT vfmv_v_f_f64m8
|
|
#define VFMVVF_FLOAT_M1 vfmv_v_f_f64m1
|
|
#define VFDOTVV_FLOAT vfdot_vv_f64m8
|
|
#define ABS fabs
|
|
#endif
|
|
|
|
FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
|
|
{
|
|
BLASLONG i=0, j=0;
|
|
double len = 0.0 ;
|
|
|
|
if ( n < 0 ) return(0.0);
|
|
if(n == 1) return (ABS(x[0]));
|
|
|
|
FLOAT_V_T vr, v0, v1;
|
|
unsigned int gvl = 0;
|
|
FLOAT_V_T_M1 v_res, v_z0;
|
|
gvl = VSETVL_MAX;
|
|
v_res = VFMVVF_FLOAT_M1(0, gvl);
|
|
v_z0 = VFMVVF_FLOAT_M1(0, gvl);
|
|
|
|
if(inc_x == 1){
|
|
gvl = VSETVL(n);
|
|
if(gvl < n/2){
|
|
vr = VFMVVF_FLOAT(0, gvl);
|
|
for(i=0,j=0; i<n/(2*gvl); i++){
|
|
v0 = VLEV_FLOAT(&x[j], gvl);
|
|
vr = VFMACCVV_FLOAT(vr, v0, v0, gvl);
|
|
j += gvl;
|
|
|
|
v1 = VLEV_FLOAT(&x[j], gvl);
|
|
vr = VFMACCVV_FLOAT(vr, v1, v1, gvl);
|
|
j += gvl;
|
|
}
|
|
v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
|
|
len += VFMVFS_FLOAT(v_res);
|
|
}
|
|
//tail
|
|
for(;j < n;){
|
|
gvl = VSETVL(n-j);
|
|
v0 = VLEV_FLOAT(&x[j], gvl);
|
|
//v1 = 0
|
|
//v1 = VFMVVF_FLOAT(0, gvl);
|
|
//vr = VFDOTVV_FLOAT(v0, v0, gvl);
|
|
vr = VFMACCVV_FLOAT(v1, v0, v0, gvl);
|
|
v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
|
|
len += VFMVFS_FLOAT(v_res);
|
|
|
|
j += gvl;
|
|
}
|
|
}else{
|
|
gvl = VSETVL(n);
|
|
unsigned int stride_x = inc_x * sizeof(FLOAT);
|
|
if(gvl < n/2){
|
|
vr = VFMVVF_FLOAT(0, gvl);
|
|
for(i=0,j=0; i<n/(2*gvl); i++){
|
|
v0 = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
|
|
vr = VFMACCVV_FLOAT(vr, v0, v0, gvl);
|
|
j += gvl;
|
|
|
|
v1 = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
|
|
vr = VFMACCVV_FLOAT(vr, v1, v1, gvl);
|
|
j += gvl;
|
|
}
|
|
v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
|
|
len += VFMVFS_FLOAT(v_res);
|
|
}
|
|
//tail
|
|
for(;j < n;){
|
|
gvl = VSETVL(n-j);
|
|
v0 = VLSEV_FLOAT(&x[j*inc_x], stride_x, gvl);
|
|
//v1 = 0
|
|
//v1 = VFMVVF_FLOAT(0, gvl);
|
|
//vr = VFDOTVV_FLOAT(v0, v0, gvl);
|
|
vr = VFMACCVV_FLOAT(v1, v0, v0, gvl);
|
|
v_res = VFREDSUM_FLOAT(v_res, vr, v_z0, gvl);
|
|
len += VFMVFS_FLOAT(v_res);
|
|
|
|
j += gvl;
|
|
}
|
|
}
|
|
return(sqrt(len));
|
|
}
|
|
|
|
|