OpenBLAS/kernel/generic/scal.c

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#include "common.h"

int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
{
    BLASLONG i = 0, j = 0;
#if defined(BFLOAT16)
    float x_float, da_float;
    SBF16TOS_K(1, &da, 1, &da_float, 1);
#else
    float x_float;
    float da_float = da;
#endif

    if ((n <= 0) || (inc_x <= 0))
        return (0);

    if (dummy2 == 0)
    {
        while (j < n)
        {

            if (da_float == 0.0)
                x_float = 0.0;
            else
            {
#if defined(BFLOAT16)
                SBF16TOS_K(1, &x[i], 1, &x_float, 1);
#else
                float x_float = x[i];
#endif
                x_float = da_float * x_float;
            }

#if defined(BFLOAT16)
            SBSTOBF16_K(1, &x_float, 1, &x[i], 1);
#else
            x[i] = x_float;
#endif

            i += inc_x;
            j++;
        }
    }
    else
    {

        while (j < n)
        {
#if defined(BFLOAT16)
            SBF16TOS_K(1, &x[i], 1, &x_float, 1);
#else
            float x_float = x[i];
#endif
            if (da == 0.0)
                if (!isnan(x_float) && !isinf(x_float))
                {
                    x_float = 0.0;
                }
                else
                {
                    x_float = NAN;
                }
            else
            {
                x_float = da_float * x_float;
            }

#if defined(BFLOAT16)
            SBSTOBF16_K(1, &x_float, 1, &x[i], 1);
#else
            x[i] = x_float;
#endif

            i += inc_x;
            j++;
        }
    }
    return 0;
}