OpenBLAS/kernel/riscv64/gemm_beta_rvv.c

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#include "common.h"

#if !defined(DOUBLE)
#define VSETVL(n)               __riscv_vsetvl_e32m8(n)
#define FLOAT_V_T               vfloat32m8_t
#define VLEV_FLOAT              __riscv_vle32_v_f32m8
#define VFMVVF_FLOAT            __riscv_vfmv_v_f_f32m8
#define VFMULVF_FLOAT           __riscv_vfmul_vf_f32m8
#define VSEV_FLOAT              __riscv_vse32_v_f32m8
#else
#define VSETVL(n)               __riscv_vsetvl_e64m8(n)
#define FLOAT_V_T               vfloat64m8_t
#define VLEV_FLOAT              __riscv_vle64_v_f64m8
#define VFMVVF_FLOAT            __riscv_vfmv_v_f_f64m8
#define VFMULVF_FLOAT           __riscv_vfmul_vf_f64m8
#define VSEV_FLOAT              __riscv_vse64_v_f64m8
#endif

// Optimizes the implementation in ../generic/gemm_beta.c

int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT beta,
          IFLOAT *dummy2, BLASLONG dummy3, IFLOAT *dummy4, BLASLONG dummy5,
          FLOAT *c, BLASLONG ldc)
{
    BLASLONG chunk;
    FLOAT *c_offset;
	size_t vl;
    FLOAT_V_T vx;

    if (beta == ZERO) {

        vl = VSETVL(m);
        vx = VFMVVF_FLOAT(0.0, vl);

        for( ; n > 0; n--, c += ldc) {
            c_offset = c;

            for(chunk=m; chunk > 0; chunk -= vl, c_offset += vl) {
                vl = VSETVL(chunk);

                VSEV_FLOAT(c_offset, vx, vl);
			}
		}

	} else {

        for( ; n > 0; n--, c += ldc) {
            c_offset = c;

            for(chunk=m; chunk > 0; chunk -= vl, c_offset += vl) {
                vl = VSETVL(chunk);

                vx = VLEV_FLOAT(c_offset, vl);
                vx = VFMULVF_FLOAT(vx, beta, vl);
                VSEV_FLOAT(c_offset, vx, vl);
			}
		}

	}

    return 0;
}