OpenBLAS/kernel/riscv64/zscal_vector.c

/***************************************************************************
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#include "common.h"
#if !defined(DOUBLE)
#define VSETVL(n) RISCV_RVV(vsetvl_e32m4)(n)
#define VSETVL_MAX RISCV_RVV(vsetvlmax_e32m1)()
#define FLOAT_V_T vfloat32m4_t
#define VLSEV_FLOAT RISCV_RVV(vlse32_v_f32m4)
#define VSSEV_FLOAT RISCV_RVV(vsse32_v_f32m4)
#define VFMACCVF_FLOAT RISCV_RVV(vfmacc_vf_f32m4)
#define VFMULVF_FLOAT RISCV_RVV(vfmul_vf_f32m4)
#define VFNMSACVF_FLOAT RISCV_RVV(vfnmsac_vf_f32m4)
#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f32m4)
#else
#define VSETVL(n) RISCV_RVV(vsetvl_e64m4)(n)
#define VSETVL_MAX RISCV_RVV(vsetvlmax_e64m1)()
#define FLOAT_V_T vfloat64m4_t
#define VLSEV_FLOAT RISCV_RVV(vlse64_v_f64m4)
#define VSSEV_FLOAT RISCV_RVV(vsse64_v_f64m4)
#define VFMACCVF_FLOAT RISCV_RVV(vfmacc_vf_f64m4)
#define VFMULVF_FLOAT RISCV_RVV(vfmul_vf_f64m4)
#define VFNMSACVF_FLOAT RISCV_RVV(vfnmsac_vf_f64m4)
#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f64m4)
#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;


        if((n <= 0) || (inc_x <= 0))
                return(0);

	if (dummy2 == 0 && da_r == 0. && da_i == 0.) {
		int i,inc_x2,ix;
		inc_x2 = 2*inc_x;
		ix=0;
		for (i=0;i<n;i++){x[ix]=0.;x[ix+1]=0.;ix+=inc_x2;}
	} else {
            unsigned int gvl = 0;
            FLOAT_V_T vt, v0, v1;
            {
                gvl = VSETVL(n);
                BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
                BLASLONG inc_xv = inc_x * 2 * gvl;
                for(i=0,j=0; i < n/gvl; i++){
                        v0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                        v1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl);

                        vt = VFMULVF_FLOAT(v0, da_r, gvl);
                        vt = VFNMSACVF_FLOAT(vt, da_i, v1, gvl);
                        v1 = VFMULVF_FLOAT(v1, da_r, gvl);
                        v1 = VFMACCVF_FLOAT(v1, da_i, v0, gvl);

                        VSSEV_FLOAT(&x[ix], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+1], stride_x, v1, gvl);

                        j += gvl;
                        ix += inc_xv;
                }
                if(j < n){
                        gvl = VSETVL(n-j);
                        v0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                        v1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl);

                        vt = VFMULVF_FLOAT(v0, da_r, gvl);
                        vt = VFNMSACVF_FLOAT(vt, da_i, v1, gvl);
                        v1 = VFMULVF_FLOAT(v1, da_r, gvl);
                        v1 = VFMACCVF_FLOAT(v1, da_i, v0, gvl);

                        VSSEV_FLOAT(&x[ix], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+1], stride_x, v1, gvl);
                }
            }
        }
        return(0);
}