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#include "common.h"

#define FLOAT_V_T               vfloat32m8_t
#define VLEV_FLOAT              RISCV_RVV(vle32_v_f32m8)
#define VLSEV_FLOAT             RISCV_RVV(vlse32_v_f32m8)
#define VSEV_FLOAT              RISCV_RVV(vse32_v_f32m8)
#define VSSEV_FLOAT             RISCV_RVV(vsse32_v_f32m8)
#define VFMULVF_FLOAT           RISCV_RVV(vfmul_vf_f32m8)
#define VFMVVF_FLOAT            RISCV_RVV(vfmv_v_f_f32m8)

#define VSETVL(n)               RISCV_RVV(vsetvl_e16m4)(n)

#if defined(HFLOAT16)
#define IFLOAT_V_T              vfloat16m4_t
#define VLEV_IFLOAT             RISCV_RVV(vle16_v_f16m4)
#define VFMACCVF_FLOAT          RISCV_RVV(vfwmacc_vf_f32m8)
#else
#define IFLOAT_V_T              vbfloat16m4_t
#define VLEV_IFLOAT             RISCV_RVV(vle16_v_bf16m4)
#define VFMACCVF_FLOAT          RISCV_RVV(vfwmaccbf16_vf_f32m8)
#endif

int CNAME(BLASLONG m, BLASLONG n, FLOAT alpha, IFLOAT *a, BLASLONG lda, IFLOAT *x, BLASLONG inc_x, FLOAT beta, FLOAT *y, BLASLONG inc_y)
{
    if (n < 0) return(0);

#if defined(HFLOAT16)
    _Float16 *a_ptr, *x_ptr, temp;
    x_ptr = (_Float16 *)(x);
#else
    __bf16 *a_ptr, *x_ptr, temp;
    x_ptr = (__bf16 *)(x);
#endif
    FLOAT *y_ptr;
    BLASLONG i, j, vl;
    IFLOAT_V_T va;
    FLOAT_V_T vy;

    y_ptr = y;
    if (inc_y == 1) {
        if (beta == 0.0) {
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VFMVVF_FLOAT(0.0, vl);
                VSEV_FLOAT(y_ptr, vy, vl);
                y_ptr += vl;
            }
        } else if (beta != 1.0) {
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VLEV_FLOAT(y_ptr, vl);
                vy = VFMULVF_FLOAT(vy, beta, vl);
                VSEV_FLOAT(y_ptr, vy, vl);
                y_ptr += vl;
            }
        }
        for (j = 0; j < n; j++) {
#if defined(HFLOAT16)
            temp = (_Float16)(alpha * (FLOAT)(x_ptr[0]));
            a_ptr = (_Float16 *)(a);
#else
            temp = (__bf16)(alpha * (FLOAT)(x_ptr[0]));
            a_ptr = (__bf16 *)(a);
#endif
            y_ptr = y;
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VLEV_FLOAT(y_ptr, vl);
                va = VLEV_IFLOAT(a_ptr, vl);
                vy = VFMACCVF_FLOAT(vy, temp, va, vl);
                VSEV_FLOAT(y_ptr, vy, vl);
                y_ptr += vl;
                a_ptr += vl;
            }
            x_ptr += inc_x;
            a += lda;
        }
    } else {
        BLASLONG stride_y = inc_y * sizeof(FLOAT);
        if (beta == 0.0) {
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VFMVVF_FLOAT(0.0, vl);
                VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
                y_ptr += vl * inc_y;
            }
        } else if (beta != 1.0) {
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VLSEV_FLOAT(y_ptr, stride_y, vl);
                vy = VFMULVF_FLOAT(vy, beta, vl);
                VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
                y_ptr += vl * inc_y;
            }
        }
        for (j = 0; j < n; j++) {
#if defined(HFLOAT16)
            temp = (_Float16)(alpha * (FLOAT)(x_ptr[0]));
            a_ptr = (_Float16 *)(a);
#else
            temp = (__bf16)(alpha * (FLOAT)(x_ptr[0]));
            a_ptr = (__bf16 *)(a);
#endif
            y_ptr = y;
            for (i = m; i > 0; i -= vl) {
                vl = VSETVL(i);
                vy = VLSEV_FLOAT(y_ptr, stride_y, vl);
                va = VLEV_IFLOAT(a_ptr, vl);
                vy = VFMACCVF_FLOAT(vy, temp, va, vl);
                VSSEV_FLOAT(y_ptr, stride_y, vy, vl);
                y_ptr += vl * inc_y;
                a_ptr += vl;
            }
            x_ptr += inc_x;
            a += lda;
        }
    }
    return(0);
}