/***************************************************************************
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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2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
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) RISCV_RVV(vsetvl_e32m4)(n)
#define VSETVL_MAX RISCV_RVV(vsetvlmax_e32m1)()
#define FLOAT_V_T vfloat32m4_t
#define FLOAT_V_T_M1 vfloat32m1_t
#define VFMVFS_FLOAT RISCV_RVV(vfmv_f_s_f32m1_f32)
#define VLSEV_FLOAT RISCV_RVV(vlse32_v_f32m4)
#define VSSEV_FLOAT RISCV_RVV(vsse32_v_f32m4)
#ifdef RISCV_0p10_INTRINSICS
#define VFREDSUM_FLOAT(va, vb, gvl) RISCV_RVV(vfredusum_vs_f32m4_f32m1)(v_res, va, vb, gvl)
#else
#define VFREDSUM_FLOAT RISCV_RVV(vfredusum_vs_f32m4_f32m1)
#endif
#define VFMACCVV_FLOAT RISCV_RVV(vfmacc_vv_f32m4)
#define VFMACCVF_FLOAT RISCV_RVV(vfmacc_vf_f32m4)
#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f32m4)
#define VFMVVF_FLOAT_M1 RISCV_RVV(vfmv_v_f_f32m1)
#define VFMULVV_FLOAT RISCV_RVV(vfmul_vv_f32m4)
#define VFNMSACVF_FLOAT RISCV_RVV(vfnmsac_vf_f32m4)
#define VFNMSACVV_FLOAT RISCV_RVV(vfnmsac_vv_f32m4)
#else
#define VSETVL(n) RISCV_RVV(vsetvl_e64m4)(n)
#define VSETVL_MAX RISCV_RVV(vsetvlmax_e64m1)()
#define FLOAT_V_T vfloat64m4_t
#define FLOAT_V_T_M1 vfloat64m1_t
#define VFMVFS_FLOAT RISCV_RVV(vfmv_f_s_f64m1_f64)
#define VLSEV_FLOAT RISCV_RVV(vlse64_v_f64m4)
#define VSSEV_FLOAT RISCV_RVV(vsse64_v_f64m4)
#ifdef RISCV_0p10_INTRINSICS
#define VFREDSUM_FLOAT(va, vb, gvl) RISCV_RVV(vfredusum_vs_f64m4_f64m1)(v_res, va, vb, gvl)
#else
#define VFREDSUM_FLOAT RISCV_RVV(vfredusum_vs_f64m4_f64m1)
#endif
#define VFMACCVV_FLOAT RISCV_RVV(vfmacc_vv_f64m4)
#define VFMACCVF_FLOAT RISCV_RVV(vfmacc_vf_f64m4)
#define VFMVVF_FLOAT RISCV_RVV(vfmv_v_f_f64m4)
#define VFMVVF_FLOAT_M1 RISCV_RVV(vfmv_v_f_f64m1)
#define VFMULVV_FLOAT RISCV_RVV(vfmul_vv_f64m4)
#define VFNMSACVF_FLOAT RISCV_RVV(vfnmsac_vf_f64m4)
#define VFNMSACVV_FLOAT RISCV_RVV(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(vr0, v_z0, gvl);
                        temp_r2 = VFMVFS_FLOAT(v_res);
                        v_res = VFREDSUM_FLOAT(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(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] += 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);
}
