Function _add

executor/operator/common/rpn.cpp:74–78

        y[i] = a[i] * b[i];
}
void _add(const int N, const float* a, const float* b, float* y)
{
    for(int i = 0; i < N; i++)
        y[i] = a[i] + b[i];
}
void _exp(const int N, const float* a, float* y)
{
    for(int i = 0; i < N; i++)