/***************************************************************************
Copyright (c) 2013, The OpenBLAS Project
All rights reserved.
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modification, are permitted provided that the following conditions are
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1. Redistributions of source code must retain the above copyright
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2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
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its contributors may be used to endorse or promote products
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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) vsetvl_e32m4(n)
#define VSETVL_MAX vsetvlmax_e32m1()
#define FLOAT_V_T vfloat32m4_t
#define FLOAT_V_T_M1 vfloat32m1_t
#define VFMVFS_FLOAT vfmv_f_s_f32m1_f32
#define VLSEV_FLOAT vlse32_v_f32m4
#define VSSEV_FLOAT vsse32_v_f32m4
#define VFREDSUM_FLOAT vfredusum_vs_f32m4_f32m1
#define VFMACCVV_FLOAT vfmacc_vv_f32m4
#define VFMACCVF_FLOAT vfmacc_vf_f32m4
#define VFMVVF_FLOAT vfmv_v_f_f32m4
#define VFMVVF_FLOAT_M1 vfmv_v_f_f32m1
#define VFMULVV_FLOAT vfmul_vv_f32m4
#define VFNMSACVF_FLOAT vfnmsac_vf_f32m4
#define VFNMSACVV_FLOAT vfnmsac_vv_f32m4
#else
#define VSETVL(n) vsetvl_e64m4(n)
#define VSETVL_MAX vsetvlmax_e64m1()
#define FLOAT_V_T vfloat64m4_t
#define FLOAT_V_T_M1 vfloat64m1_t
#define VFMVFS_FLOAT vfmv_f_s_f64m1_f64
#define VLSEV_FLOAT vlse64_v_f64m4
#define VSSEV_FLOAT vsse64_v_f64m4
#define VFREDSUM_FLOAT vfredusum_vs_f64m4_f64m1
#define VFMACCVV_FLOAT vfmacc_vv_f64m4
#define VFMACCVF_FLOAT vfmacc_vf_f64m4
#define VFMVVF_FLOAT vfmv_v_f_f64m4
#define VFMVVF_FLOAT_M1 vfmv_v_f_f64m1
#define VFMULVV_FLOAT vfmul_vv_f64m4
#define VFNMSACVF_FLOAT vfnmsac_vf_f64m4
#define VFNMSACVV_FLOAT vfnmsac_vv_f64m4
#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, 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;

        BLASLONG m1 = m - offset;
        a_ptr = a + m1 * lda2;
        jx = m1 * inc_x2;
        jy = m1 * inc_y2;
        ja = m1 * 2;
        for(j = m1; j < m; 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;
                ix = 0;
                iy = 0;
                ia = 0;
                i = 0;
                if(j > 0){
                        gvl = VSETVL(j);
                        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 < j / 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;
                        }
                        v_res = VFREDSUM_FLOAT(v_res, vr0, v_z0, gvl);
                        temp_r2 = VFMVFS_FLOAT(v_res);
                        v_res = VFREDSUM_FLOAT(v_res, vr1, v_z0, gvl);
                        temp_i2 = VFMVFS_FLOAT(v_res);
                        if(i < j){
				                gvl = VSETVL(j-i);
                                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 = VFMULVV_FLOAT(vx0, va0, gvl);
                                vr0 = VFMACCVV_FLOAT(vr0, vx1, va1, gvl);
                                vr1 = VFMULVV_FLOAT(vx1, va0, gvl);
                                vr1 = VFNMSACVV_FLOAT(vr1, vx0, va1, gvl);
#else
                                vr0 = VFMULVV_FLOAT(vx0, va0, gvl);
                                vr0 = VFNMSACVV_FLOAT(vr0, vx1, va1, gvl);
                                vr1 = VFMULVV_FLOAT(vx1, va0, gvl);
                                vr1 = VFMACCVV_FLOAT(vr1, vx0, va1, gvl);
#endif

                                v_res = VFREDSUM_FLOAT(v_res, vr0, v_z0, gvl);
                                temp_r2 += VFMVFS_FLOAT(v_res);
                                v_res = VFREDSUM_FLOAT(v_res, vr1, v_z0, gvl);
                                temp_i2 += VFMVFS_FLOAT(v_res);
                        }
                }
                y[jy] += temp_r1 * a_ptr[ja];
                y[jy+1] += temp_i1 * a_ptr[ja];
		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);
}
