OpenBLAS/kernel/riscv64/swap_vector.c

/***************************************************************************
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#include "common.h"
#include <stdio.h>
#if !defined(DOUBLE)
#define RVV_EFLOAT RVV_E32
#define RVV_M RVV_M8
#define FLOAT_V_T float32xm8_t
#define VLEV_FLOAT vlev_float32xm8
#define VLSEV_FLOAT vlsev_float32xm8
#define VSEV_FLOAT vsev_float32xm8
#define VSSEV_FLOAT vssev_float32xm8
#else
#define RVV_EFLOAT RVV_E64
#define RVV_M RVV_M8
#define FLOAT_V_T float64xm8_t
#define VLEV_FLOAT vlev_float64xm8
#define VLSEV_FLOAT vlsev_float64xm8
#define VSEV_FLOAT vsev_float64xm8
#define VSSEV_FLOAT vssev_float64xm8
#endif

int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT dummy3, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
{
	BLASLONG i = 0, j = 0;
	BLASLONG ix = 0,iy = 0;
        BLASLONG stride_x, stride_y;
        FLOAT_V_T vx0, vx1, vy0, vy1;
        unsigned int gvl = 0;

	if (n < 0)  return(0);
        if(inc_x == 1 && inc_y == 1){
                gvl = vsetvli(n, RVV_EFLOAT, RVV_M);
                if(gvl <= n/2){
                        for(i=0,j=0; i<n/(2*gvl); i++){
                                vx0 = VLEV_FLOAT(&x[j], gvl);
                                vy0 = VLEV_FLOAT(&y[j], gvl);
                                VSEV_FLOAT(&x[j], vy0, gvl);
                                VSEV_FLOAT(&y[j], vx0, gvl);

                                vx1 = VLEV_FLOAT(&x[j+gvl], gvl);
                                vy1 = VLEV_FLOAT(&y[j+gvl], gvl);
                                VSEV_FLOAT(&x[j+gvl], vy1, gvl);
                                VSEV_FLOAT(&y[j+gvl], vx1, gvl);
                                j+=gvl * 2;
                        }
                }
                for(;j<n;){
                        gvl = vsetvli(n-j, RVV_EFLOAT, RVV_M);
                        vx0 = VLEV_FLOAT(&x[j], gvl);
                        vy0 = VLEV_FLOAT(&y[j], gvl);
                        VSEV_FLOAT(&x[j], vy0, gvl);
                        VSEV_FLOAT(&y[j], vx0, gvl);
                        j+=gvl;
                }
        }else if (inc_y == 1){
                gvl = vsetvli(n, RVV_EFLOAT, RVV_M);
                stride_x = inc_x * sizeof(FLOAT);
                if(gvl <= n/2){
                        BLASLONG inc_xv = inc_x * gvl;
                        for(i=0,j=0; i<n/(2*gvl); i++){
                                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                vy0 = VLEV_FLOAT(&y[j], gvl);
                                VSSEV_FLOAT(&x[ix], stride_x, vy0, gvl);
                                VSEV_FLOAT(&y[j], vx0, gvl);

                                vx1 = VLSEV_FLOAT(&x[ix+inc_xv], stride_x, gvl);
                                vy1 = VLEV_FLOAT(&y[j+gvl], gvl);
                                VSSEV_FLOAT(&x[ix+inc_xv], stride_x, vy1, gvl);
                                VSEV_FLOAT(&y[j+gvl], vx1, gvl);
                                j += gvl * 2;
                                ix += inc_xv * 2;
                        }
                }
                for(;j<n;){
                        gvl = vsetvli(n-j, RVV_EFLOAT, RVV_M);
                        vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                        vy0 = VLEV_FLOAT(&y[j], gvl);
                        VSSEV_FLOAT(&x[ix], stride_x, vy0, gvl);
                        VSEV_FLOAT(&y[j], vx0, gvl);
                        j += gvl;
                        ix += inc_x * gvl;
                }
        }else if(inc_x == 1){
                gvl = vsetvli(n, RVV_EFLOAT, RVV_M);
                stride_y = inc_y * sizeof(FLOAT);
                if(gvl <= n/2){
                        BLASLONG inc_yv = inc_y * gvl;
                        for(i=0,j=0; i<n/(2*gvl); i++){
                                vx0 = VLEV_FLOAT(&x[j], gvl);
                                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                VSEV_FLOAT(&x[j], vy0, gvl);
                                VSSEV_FLOAT(&y[iy], stride_y, vx0, gvl);

                                vx1 = VLEV_FLOAT(&x[j+gvl], gvl);
                                vy1 = VLSEV_FLOAT(&y[iy+inc_yv], stride_y, gvl);
                                VSEV_FLOAT(&x[j+gvl], vy1, gvl);
                                VSSEV_FLOAT(&y[iy+inc_yv], stride_y, vx1, gvl);
                                j += gvl * 2;
                                iy += inc_yv * 2;
                        }
                }
                for(;j<n;){
                        gvl = vsetvli(n-j, RVV_EFLOAT, RVV_M);
                        vx0 = VLEV_FLOAT(&x[j], gvl);
                        vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                        VSEV_FLOAT(&x[j], vy0, gvl);
                        VSSEV_FLOAT(&y[iy], stride_y, vx0, gvl);
                        j += gvl;
                        iy += inc_y * gvl;
                }
        }else{
                gvl = vsetvli(n, RVV_EFLOAT, RVV_M);
                stride_x = inc_x * sizeof(FLOAT);
                stride_y = inc_y * sizeof(FLOAT);
                if(gvl <= n/2){
                        BLASLONG inc_xv = inc_x * gvl;
                        BLASLONG inc_yv = inc_y * gvl;
                        for(i=0,j=0; i<n/(2*gvl); i++){
                                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                VSSEV_FLOAT(&x[ix], stride_x, vy0, gvl);
                                VSSEV_FLOAT(&y[iy], stride_y, vx0, gvl);

                                vx1 = VLSEV_FLOAT(&x[ix+inc_xv], stride_x, gvl);
                                vy1 = VLSEV_FLOAT(&y[iy+inc_yv], stride_y, gvl);
                                VSSEV_FLOAT(&x[ix+inc_xv], stride_x, vy1, gvl);
                                VSSEV_FLOAT(&y[iy+inc_yv], stride_y, vx1, gvl);
                                j += gvl * 2;
                                ix += inc_xv * 2;
                                iy += inc_yv * 2;
                        }
                }
                for(;j<n;){
                        gvl = vsetvli(n-j, RVV_EFLOAT, RVV_M);
                        vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                        vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                        VSSEV_FLOAT(&x[ix], stride_x, vy0, gvl);
                        VSSEV_FLOAT(&y[iy], stride_y, vx0, gvl);
                        j += gvl;
                        ix += inc_x * gvl;
                        iy += inc_y * gvl;
                }
        }
	return(0);
}