OpenBLAS/kernel/riscv64/zaxpy_vector.c

/***************************************************************************
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#include "common.h"

#if !defined(DOUBLE)
#define RVV_EFLOAT RVV_E32
#define RVV_M RVV_M4
#define FLOAT_V_T float32xm4_t
#define VLSEV_FLOAT vlsev_float32xm4
#define VSSEV_FLOAT vssev_float32xm4
#define VFMACCVF_FLOAT vfmaccvf_float32xm4
#define VFNMSACVF_FLOAT vfnmsacvf_float32xm4
#else
#define RVV_EFLOAT RVV_E64
#define RVV_M RVV_M4
#define FLOAT_V_T float64xm4_t
#define VLSEV_FLOAT vlsev_float64xm4
#define VSSEV_FLOAT vssev_float64xm4
#define VFMACCVF_FLOAT vfmaccvf_float64xm4
#define VFNMSACVF_FLOAT vfnmsacvf_float64xm4
#endif

int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
{
	BLASLONG i = 0, j = 0;
	BLASLONG ix = 0,iy = 0;
	if(n < 0) return(0);
	if(da_r == 0.0 && da_i == 0.0) return(0);
        unsigned int gvl = 0;
        BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
        BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);

        FLOAT_V_T vx0, vx1, vy0, vy1;
        gvl = vsetvli(n, RVV_EFLOAT, RVV_M);
        BLASLONG inc_xv = inc_x * 2 * gvl;
        BLASLONG inc_yv = inc_y * 2 * gvl;
        for(i=0,j=0; i < n/gvl; i++){
                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                vx1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl);
                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                vy1 = VLSEV_FLOAT(&y[iy+1], stride_y, gvl);
#if !defined(CONJ)
                vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, gvl);
                vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, gvl);
#else
                vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, gvl);
                vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, gvl);
                vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, gvl);
#endif
                VSSEV_FLOAT(&y[iy], stride_y, vy0, gvl);
                VSSEV_FLOAT(&y[iy+1], stride_y, vy1, gvl);
                j += gvl;
                ix += inc_xv;
                iy += inc_yv;
        }
        if(j < n){
                gvl = vsetvli(n-j, RVV_EFLOAT, RVV_M);
                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                vx1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl);
                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                vy1 = VLSEV_FLOAT(&y[iy+1], stride_y, gvl);
#if !defined(CONJ)
                vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, gvl);
                vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, gvl);
#else
                vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, gvl);
                vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, gvl);
                vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, gvl);
                vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, gvl);
#endif
                VSSEV_FLOAT(&y[iy], stride_y, vy0, gvl);
                VSSEV_FLOAT(&y[iy+1], stride_y, vy1, gvl);
        }
	return(0);
}