OpenBLAS/kernel/riscv64/zscal_vector.c

/***************************************************************************
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#include "common.h"
#if !defined(DOUBLE)
#define VSETVL(n) __riscv_vsetvl_e32m4(n)
#define VSETVL_MAX __riscv_vsetvlmax_e32m1()
#define FLOAT_V_T vfloat32m4_t
#define VLSEV_FLOAT __riscv_vlse32_v_f32m4
#define VSSEV_FLOAT __riscv_vsse32_v_f32m4
#define VFMACCVF_FLOAT __riscv_vfmacc_vf_f32m4
#define VFMULVF_FLOAT __riscv_vfmul_vf_f32m4
#define VFNMSACVF_FLOAT __riscv_vfnmsac_vf_f32m4
#define VFMVVF_FLOAT __riscv_vfmv_v_f_f32m4
#else
#define VSETVL(n) __riscv_vsetvl_e64m4(n)
#define VSETVL_MAX __riscv_vsetvlmax_e64m1()
#define FLOAT_V_T vfloat64m4_t
#define VLSEV_FLOAT __riscv_vlse64_v_f64m4
#define VSSEV_FLOAT __riscv_vsse64_v_f64m4
#define VFMACCVF_FLOAT __riscv_vfmacc_vf_f64m4
#define VFMULVF_FLOAT __riscv_vfmul_vf_f64m4
#define VFNMSACVF_FLOAT __riscv_vfnmsac_vf_f64m4
#define VFMVVF_FLOAT __riscv_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);

        unsigned int gvl = 0;
        FLOAT_V_T vt, v0, v1;
        if(da_r == 0.0 && da_i == 0.0){
                gvl = VSETVL(n);
                BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
                BLASLONG inc_xv = inc_x * 2 * gvl;
                vt = VFMVVF_FLOAT(0.0, gvl);
                for(i=0,j=0; i < n/(gvl*2); i++){
                        VSSEV_FLOAT(&x[ix], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+1], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+inc_xv], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+inc_xv+1], stride_x, vt, gvl);

                        j += gvl*2;
                        ix += inc_xv*2;
                }
                for(; j < n; ){
                        gvl = VSETVL(n-j);
                        VSSEV_FLOAT(&x[ix], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+1], stride_x, vt, gvl);
                        j += gvl;
                        ix += inc_x * 2 * gvl;
                }
        }else if(da_r == 0.0){
                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(v1, -da_i, gvl);
                        v1 = VFMULVF_FLOAT(v0, da_i, 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(v1, -da_i, gvl);
                        v1 = VFMULVF_FLOAT(v0, da_i, gvl);

                        VSSEV_FLOAT(&x[ix], stride_x, vt, gvl);
                        VSSEV_FLOAT(&x[ix+1], stride_x, v1, gvl);
                }
        }else if(da_i == 0.0){
                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);
                        v1 = VFMULVF_FLOAT(v1, da_r, 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);
                        v1 = VFMULVF_FLOAT(v1, da_r, gvl);

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