OpenBLAS/kernel/riscv64/zgemm_ncopy_rvv_v1.c

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#include <stdio.h>
#include "common.h"

#if !defined(DOUBLE)
#define VSETVL(n)               __riscv_vsetvl_e32m2(n)
#define FLOAT_V_T               vfloat32m2_t
#define VLSSEG2_FLOAT           __riscv_vlsseg2e32_v_f32m2
#define VSSEG2_FLOAT            __riscv_vsseg2e32_v_f32m2
#else
#define VSETVL(n)               __riscv_vsetvl_e64m2(n)
#define FLOAT_V_T               vfloat64m2_t
#define VLSSEG2_FLOAT           __riscv_vlsseg2e64_v_f64m2
#define VSSEG2_FLOAT            __riscv_vsseg2e64_v_f64m2
#endif

int CNAME(BLASLONG m, BLASLONG n, IFLOAT *a, BLASLONG lda, IFLOAT *b){

    BLASLONG i, j;

    FLOAT *a_offset;
    FLOAT *a_offset1;
    FLOAT *b_offset;

    FLOAT_V_T v0, v1;
    size_t vl;

    //fprintf(stderr, "%s, m=%ld n=%ld lda=%ld\n", __FUNCTION__, m, n, lda);
    a_offset = a;
    b_offset = b;

    for(j = n; j > 0; j -= vl) {
        vl = VSETVL(j);

        a_offset1 = a_offset;
        a_offset += vl * lda * 2;

        for(i = m; i > 0; i--) {
            VLSSEG2_FLOAT(&v0, &v1, a_offset1, lda * sizeof(FLOAT) * 2, vl);
            VSSEG2_FLOAT(b_offset, v0, v1, vl);

            a_offset1 += 2;
            b_offset += vl * 2;
        }
    }
    return 0;
}