/***************************************************************************
Copyright (c) 2013, The OpenBLAS Project
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its contributors may be used to endorse or promote products
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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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 FLOAT_V_T_M1 vfloat32m1_t
#define VFMVFS_FLOAT __riscv_vfmv_f_s_f32m1_f32
#define VLSEV_FLOAT __riscv_vlse32_v_f32m4
#define VSSEV_FLOAT __riscv_vsse32_v_f32m4
#define VFREDSUM_FLOAT __riscv_vfredusum_vs_f32m4_f32m1
#define VFMACCVV_FLOAT __riscv_vfmacc_vv_f32m4
#define VFMACCVV_FLOAT_TU __riscv_vfmacc_vv_f32m4_tu
#define VFMACCVF_FLOAT __riscv_vfmacc_vf_f32m4
#define VFMVVF_FLOAT __riscv_vfmv_v_f_f32m4
#define VFMVVF_FLOAT_M1 __riscv_vfmv_v_f_f32m1
#define VFMULVV_FLOAT __riscv_vfmul_vv_f32m4
#define VFNMSACVF_FLOAT __riscv_vfnmsac_vf_f32m4
#define VFNMSACVV_FLOAT __riscv_vfnmsac_vv_f32m4
#define VFNMSACVV_FLOAT_TU __riscv_vfnmsac_vv_f32m4_tu
#else
#define VSETVL(n) __riscv_vsetvl_e64m4(n)
#define VSETVL_MAX __riscv_vsetvlmax_e64m1()
#define FLOAT_V_T vfloat64m4_t
#define FLOAT_V_T_M1 vfloat64m1_t
#define VFMVFS_FLOAT __riscv_vfmv_f_s_f64m1_f64
#define VLSEV_FLOAT __riscv_vlse64_v_f64m4
#define VSSEV_FLOAT __riscv_vsse64_v_f64m4
#define VFREDSUM_FLOAT __riscv_vfredusum_vs_f64m4_f64m1
#define VFMACCVV_FLOAT __riscv_vfmacc_vv_f64m4
#define VFMACCVV_FLOAT_TU __riscv_vfmacc_vv_f64m4_tu
#define VFMACCVF_FLOAT __riscv_vfmacc_vf_f64m4
#define VFMVVF_FLOAT __riscv_vfmv_v_f_f64m4
#define VFMVVF_FLOAT_M1 __riscv_vfmv_v_f_f64m1
#define VFMULVV_FLOAT __riscv_vfmul_vv_f64m4
#define VFNMSACVF_FLOAT __riscv_vfnmsac_vf_f64m4
#define VFNMSACVV_FLOAT __riscv_vfnmsac_vv_f64m4
#define VFNMSACVV_FLOAT_TU __riscv_vfnmsac_vv_f64m4_tu
#endif

int CNAME(BLASLONG m, BLASLONG offset, FLOAT alpha_r, FLOAT alpha_i, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG incx, FLOAT *y, BLASLONG incy, FLOAT *buffer){
        BLASLONG i, j, k;
        BLASLONG ix, iy, ia;
        BLASLONG jx, jy, ja;
        FLOAT temp_r1, temp_i1;
        FLOAT temp_r2, temp_i2;
        FLOAT *a_ptr = a;
        unsigned int gvl = 0;
        FLOAT_V_T_M1 v_res, v_z0;
        gvl = VSETVL_MAX;
        v_res = VFMVVF_FLOAT_M1(0, gvl);
        v_z0 = VFMVVF_FLOAT_M1(0, gvl);

        FLOAT_V_T va0, va1, vx0, vx1, vy0, vy1, vr0, vr1;
        BLASLONG stride_x, stride_y, stride_a, inc_xv, inc_yv, inc_av, len, lda2;

        BLASLONG inc_x2 = incx * 2;
        BLASLONG inc_y2 = incy * 2;
        stride_x = inc_x2 * sizeof(FLOAT);
        stride_y = inc_y2 * sizeof(FLOAT);
        stride_a = 2 * sizeof(FLOAT);
        lda2 = lda * 2;

        jx = 0;
        jy = 0;
        ja = 0;
        for(j = 0; j < offset; j++){
                temp_r1 = alpha_r * x[jx]   - alpha_i * x[jx+1];;
                temp_i1 = alpha_r * x[jx+1] + alpha_i * x[jx];
                temp_r2 = 0;
                temp_i2 = 0;
                y[jy] += temp_r1 * a_ptr[ja];
                y[jy+1] += temp_i1 * a_ptr[ja];
                ix = jx + inc_x2;
                iy = jy + inc_y2;
                ia = ja + 2;
                i = j + 1;
                len = m - i;
                if(len > 0){
                        gvl = VSETVL(len);
                        inc_xv = incx * gvl * 2;
                        inc_yv = incy * gvl * 2;
                        inc_av = gvl * 2;
                        vr0 = VFMVVF_FLOAT(0, gvl);
                        vr1 = VFMVVF_FLOAT(0, gvl);
                        for(k = 0; k < len / gvl; k++){
                                va0 = VLSEV_FLOAT(&a_ptr[ia], stride_a, gvl);
                                va1 = VLSEV_FLOAT(&a_ptr[ia+1], stride_a, gvl);
                                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl);
                                vy1 = VLSEV_FLOAT(&y[iy+1], stride_y, gvl);
#ifndef HEMVREV
                                vy0 = VFMACCVF_FLOAT(vy0, temp_r1, va0, gvl);
                                vy0 = VFNMSACVF_FLOAT(vy0, temp_i1, va1, gvl);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_r1, va1, gvl);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_i1, va0, gvl);
#else
                                vy0 = VFMACCVF_FLOAT(vy0, temp_r1, va0, gvl);
                                vy0 = VFMACCVF_FLOAT(vy0, temp_i1, va1, gvl);
                                vy1 = VFNMSACVF_FLOAT(vy1, temp_r1, va1, gvl);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_i1, va0, gvl);
#endif
                                VSSEV_FLOAT(&y[iy], stride_y, vy0, gvl);
                                VSSEV_FLOAT(&y[iy+1], stride_y, vy1, gvl);

                                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl);
                                vx1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl);
#ifndef HEMVREV
                                vr0 = VFMACCVV_FLOAT(vr0, vx0, va0, gvl);
                                vr0 = VFMACCVV_FLOAT(vr0, vx1, va1, gvl);
                                vr1 = VFMACCVV_FLOAT(vr1, vx1, va0, gvl);
                                vr1 = VFNMSACVV_FLOAT(vr1, vx0, va1, gvl);
#else
                                vr0 = VFMACCVV_FLOAT(vr0, vx0, va0, gvl);
                                vr0 = VFNMSACVV_FLOAT(vr0, vx1, va1, gvl);
                                vr1 = VFMACCVV_FLOAT(vr1, vx1, va0, gvl);
                                vr1 = VFMACCVV_FLOAT(vr1, vx0, va1, gvl);

#endif
                                i += gvl;
                                ix += inc_xv;
                                iy += inc_yv;
                                ia += inc_av;
                        }

                        if(i < m){
				unsigned int gvl_rem = VSETVL(m-i);
                                va0 = VLSEV_FLOAT(&a_ptr[ia], stride_a, gvl_rem);
                                va1 = VLSEV_FLOAT(&a_ptr[ia+1], stride_a, gvl_rem);
                                vy0 = VLSEV_FLOAT(&y[iy], stride_y, gvl_rem);
                                vy1 = VLSEV_FLOAT(&y[iy+1], stride_y, gvl_rem);
#ifndef HEMVREV
                                vy0 = VFMACCVF_FLOAT(vy0, temp_r1, va0, gvl_rem);
                                vy0 = VFNMSACVF_FLOAT(vy0, temp_i1, va1, gvl_rem);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_r1, va1, gvl_rem);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_i1, va0, gvl_rem);
#else
                                vy0 = VFMACCVF_FLOAT(vy0, temp_r1, va0, gvl_rem);
                                vy0 = VFMACCVF_FLOAT(vy0, temp_i1, va1, gvl_rem);
                                vy1 = VFNMSACVF_FLOAT(vy1, temp_r1, va1, gvl_rem);
                                vy1 = VFMACCVF_FLOAT(vy1, temp_i1, va0, gvl_rem);
#endif
                                VSSEV_FLOAT(&y[iy], stride_y, vy0, gvl_rem);
                                VSSEV_FLOAT(&y[iy+1], stride_y, vy1, gvl_rem);

                                vx0 = VLSEV_FLOAT(&x[ix], stride_x, gvl_rem);
                                vx1 = VLSEV_FLOAT(&x[ix+1], stride_x, gvl_rem);
#ifndef HEMVREV
                                vr0 = VFMACCVV_FLOAT_TU(vr0, vx0, va0, gvl_rem);
                                vr0 = VFMACCVV_FLOAT_TU(vr0, vx1, va1, gvl_rem);
                                vr1 = VFMACCVV_FLOAT_TU(vr1, vx1, va0, gvl_rem);
                                vr1 = VFNMSACVV_FLOAT_TU(vr1, vx0, va1, gvl_rem);
#else
                                vr0 = VFMACCVV_FLOAT_TU(vr0, vx0, va0, gvl_rem);
                                vr0 = VFNMSACVV_FLOAT_TU(vr0, vx1, va1, gvl_rem);
                                vr1 = VFMACCVV_FLOAT_TU(vr1, vx1, va0, gvl_rem);
                                vr1 = VFMACCVV_FLOAT_TU(vr1, vx0, va1, gvl_rem);
#endif
                        }
                        v_res = VFREDSUM_FLOAT(vr0, v_z0, gvl);
                        temp_r2 = VFMVFS_FLOAT(v_res);
                        v_res = VFREDSUM_FLOAT(vr1, v_z0, gvl);
                        temp_i2 = VFMVFS_FLOAT(v_res);
                }
		y[jy] += alpha_r * temp_r2 - alpha_i * temp_i2;
		y[jy+1] += alpha_r * temp_i2 + alpha_i * temp_r2;
		jx    += inc_x2;
		jy    += inc_y2;
		ja    += 2;
		a_ptr += lda2;
        }
	return(0);
}
