OpenBLAS/kernel/riscv64/zrot_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 VLEV_FLOAT __riscv_vle32_v_f32m4
#define VLSEV_FLOAT __riscv_vlse32_v_f32m4
#define VSEV_FLOAT __riscv_vse32_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
#else
#define VSETVL(n) __riscv_vsetvl_e64m4(n)
#define VSETVL_MAX __riscv_vsetvlmax_e64m1()
#define FLOAT_V_T vfloat64m4_t
#define VLEV_FLOAT __riscv_vle64_v_f64m4
#define VLSEV_FLOAT __riscv_vlse64_v_f64m4
#define VSEV_FLOAT __riscv_vse64_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
#endif

int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT c, FLOAT s)
{
        BLASLONG i=0, j=0;
        BLASLONG ix=0,iy=0;

        if (n < 1)  return(0);
        unsigned int gvl = 0;

        FLOAT_V_T vt0, vt1, vx0, vx1, vy0, vy1;
        gvl = VSETVL((inc_x != 0 && inc_y != 0) ? n : 1);
        BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
        BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);
        BLASLONG inc_xv = inc_x * 2 * gvl;
        BLASLONG inc_yv = inc_y * 2 * gvl;

	if(inc_x==1 && inc_y==1){
		for(i=0,j=0; i < n/gvl; i++){
			vx0 = VLEV_FLOAT(&x[ix], gvl);
			vx1 = VLEV_FLOAT(&x[ix+gvl], gvl);
			vy0 = VLEV_FLOAT(&y[ix], gvl);
			vy1 = VLEV_FLOAT(&y[ix+gvl], gvl);

			vt0 = VFMULVF_FLOAT(vx0, c, gvl);
			vt0 = VFMACCVF_FLOAT(vt0, s, vy0, gvl);
			vt1 = VFMULVF_FLOAT(vx1, c, gvl);
			vt1 = VFMACCVF_FLOAT(vt1, s, vy1, gvl);
			vy0 = VFMULVF_FLOAT(vy0, c, gvl);
			vy0 = VFNMSACVF_FLOAT(vy0, s, vx0, gvl);
			vy1 = VFMULVF_FLOAT(vy1, c, gvl);
			vy1 = VFNMSACVF_FLOAT(vy1, s, vx1, gvl);

			VSEV_FLOAT(&x[ix], vt0, gvl);
			VSEV_FLOAT(&x[ix+gvl], vt1, gvl);
			VSEV_FLOAT(&y[ix], vy0, gvl);
			VSEV_FLOAT(&y[ix+gvl], vy1, gvl);

			j += gvl;
			ix += 2*gvl;
		}
		if(j < n){
			gvl = VSETVL(n-j);
						vx0 = VLEV_FLOAT(&x[ix], gvl);
			vx1 = VLEV_FLOAT(&x[ix+gvl], gvl);
			vy0 = VLEV_FLOAT(&y[ix], gvl);
			vy1 = VLEV_FLOAT(&y[ix+gvl], gvl);

			vt0 = VFMULVF_FLOAT(vx0, c, gvl);
			vt0 = VFMACCVF_FLOAT(vt0, s, vy0, gvl);
			vt1 = VFMULVF_FLOAT(vx1, c, gvl);
			vt1 = VFMACCVF_FLOAT(vt1, s, vy1, gvl);
			vy0 = VFMULVF_FLOAT(vy0, c, gvl);
			vy0 = VFNMSACVF_FLOAT(vy0, s, vx0, gvl);
			vy1 = VFMULVF_FLOAT(vy1, c, gvl);
			vy1 = VFNMSACVF_FLOAT(vy1, s, vx1, gvl);

			VSEV_FLOAT(&x[ix], vt0, gvl);
			VSEV_FLOAT(&x[ix+gvl], vt1, gvl);
			VSEV_FLOAT(&y[ix], vy0, gvl);
			VSEV_FLOAT(&y[ix+gvl], vy1, gvl);
		}
		
	}else{
		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);

			vt0 = VFMULVF_FLOAT(vx0, c, gvl);
			vt0 = VFMACCVF_FLOAT(vt0, s, vy0, gvl);
			vt1 = VFMULVF_FLOAT(vx1, c, gvl);
			vt1 = VFMACCVF_FLOAT(vt1, s, vy1, gvl);
			vy0 = VFMULVF_FLOAT(vy0, c, gvl);
			vy0 = VFNMSACVF_FLOAT(vy0, s, vx0, gvl);
			vy1 = VFMULVF_FLOAT(vy1, c, gvl);
			vy1 = VFNMSACVF_FLOAT(vy1, s, vx1, gvl);

			VSSEV_FLOAT(&x[ix], stride_x, vt0, gvl);
			VSSEV_FLOAT(&x[ix+1], stride_x, vt1, gvl);
			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 = VSETVL(n-j);
			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);

			vt0 = VFMULVF_FLOAT(vx0, c, gvl);
			vt0 = VFMACCVF_FLOAT(vt0, s, vy0, gvl);
			vt1 = VFMULVF_FLOAT(vx1, c, gvl);
			vt1 = VFMACCVF_FLOAT(vt1, s, vy1, gvl);
			vy0 = VFMULVF_FLOAT(vy0, c, gvl);
			vy0 = VFNMSACVF_FLOAT(vy0, s, vx0, gvl);
			vy1 = VFMULVF_FLOAT(vy1, c, gvl);
			vy1 = VFNMSACVF_FLOAT(vy1, s, vx1, gvl);

			VSSEV_FLOAT(&x[ix], stride_x, vt0, gvl);
			VSSEV_FLOAT(&x[ix+1], stride_x, vt1, gvl);
			VSSEV_FLOAT(&y[iy], stride_y, vy0, gvl);
			VSSEV_FLOAT(&y[iy+1], stride_y, vy1, gvl);
		}
	}
        return(0);
}