OpenBLAS/kernel/generic/gemv_n.c

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#include "common.h"
#include "bf16_macros.h"

int CNAME(BLASLONG m, BLASLONG n, FLOAT alpha, IFLOAT *a, BLASLONG lda, IFLOAT *x, BLASLONG inc_x, FLOAT beta, FLOAT *y, BLASLONG inc_y)
{
    BLASLONG i;
    BLASLONG ix, iy;
    BLASLONG j;
    FLOAT *a_ptr;
#ifdef BGEMM
    float temp;
#else
    FLOAT temp;
#endif

    iy = 0;
    for (BLASLONG i = 0; i < m; i++)
    {
        temp = 0.0;

        ix = 0;
        a_ptr = a;
        for (BLASLONG j = 0; j < n; j++)
        {
            temp += BF16TOF32(a_ptr[i]) * BF16TOF32(x[ix]);
            ix += inc_x;
            a_ptr += lda;
        }

        if (BETA == ZERO)
        {
            y[iy] = F32TOBF16(ALPHA * temp);
        }
        else
        {
            y[iy] = F32TOBF16(ALPHA * temp + BETA * BF16TOF32(y[iy]));
        }

        iy += inc_y;
    }

    return (0);
}