OpenBLAS/kernel/riscv64/zaxpy_rvv.c

/***************************************************************************
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#include "common.h"

#if !defined(DOUBLE)
#define VSETVL(n) vsetvl_e32m4(n)
#define FLOAT_V_T vfloat32m4_t
#define VLSEG_FLOAT vlseg2e32_v_f32m4
#define VLSSEG_FLOAT vlsseg2e32_v_f32m4
#define VSSEG_FLOAT vsseg2e32_v_f32m4
#define VSSSEG_FLOAT vssseg2e32_v_f32m4
#define VFMACCVF_FLOAT vfmacc_vf_f32m4
#define VFNMSACVF_FLOAT vfnmsac_vf_f32m4
#else
#define VSETVL(n) vsetvl_e64m4(n)
#define FLOAT_V_T vfloat64m4_t
#define VLSEG_FLOAT vlseg2e64_v_f64m4
#define VLSSEG_FLOAT vlsseg2e64_v_f64m4
#define VSSEG_FLOAT vsseg2e64_v_f64m4
#define VSSSEG_FLOAT vssseg2e64_v_f64m4
#define VFMACCVF_FLOAT vfmacc_vf_f64m4
#define VFNMSACVF_FLOAT vfnmsac_vf_f64m4
#endif

int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
{
    if(n < 0) return(0);
    if(da_r == 0.0 && da_i == 0.0) return(0);
 
    FLOAT_V_T vx0, vx1, vy0, vy1;

    if(inc_x == 1 && inc_y == 1) {

        for (size_t vl; n > 0; n -= vl, x += vl*2, y += vl*2) {
            vl = VSETVL(n);

            VLSEG_FLOAT(&vx0, &vx1, x, vl);
            VLSEG_FLOAT(&vy0, &vy1, y, vl);
        #if !defined(CONJ)
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #else
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #endif
            VSSEG_FLOAT(y, vy0, vy1, vl);
        }

    } else if (inc_x == 1) {

        BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);

        for (size_t vl; n > 0; n -= vl, x += vl*2, y += vl*inc_y*2) {
            vl = VSETVL(n);

            VLSEG_FLOAT(&vx0, &vx1, x, vl);
            VLSSEG_FLOAT(&vy0, &vy1, y, stride_y, vl);

        #if !defined(CONJ)
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #else
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #endif
            VSSSEG_FLOAT(y, stride_y, vy0, vy1, vl);
        }

    } else if (inc_y == 1) {

        BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);

        for (size_t vl; n > 0; n -= vl, x += vl*inc_x*2, y += vl*2) {
            vl = VSETVL(n);

            VLSSEG_FLOAT(&vx0, &vx1, x, stride_x, vl);
            VLSEG_FLOAT(&vy0, &vy1, y, vl);

        #if !defined(CONJ)
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #else
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #endif
            VSSEG_FLOAT(y, vy0, vy1, vl);
        }

    } else {

        BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
        BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);

        for (size_t vl; n > 0; n -= vl, x += vl*inc_x*2, y += vl*inc_y*2) {
            vl = VSETVL(n);

            VLSSEG_FLOAT(&vx0, &vx1, x, stride_x, vl);
            VLSSEG_FLOAT(&vy0, &vy1, y, stride_y, vl);

        #if !defined(CONJ)
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFNMSACVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #else
            vy0 = VFMACCVF_FLOAT(vy0, da_r, vx0, vl);
            vy0 = VFMACCVF_FLOAT(vy0, da_i, vx1, vl);
            vy1 = VFNMSACVF_FLOAT(vy1, da_r, vx1, vl);
            vy1 = VFMACCVF_FLOAT(vy1, da_i, vx0, vl);
        #endif
            VSSSEG_FLOAT(y, stride_y, vy0, vy1, vl);
        }

    }

    return(0);
}