Magnitude calculation

Parameters:

x  
y source X and Y arrays
dst destination array
len length of arrays
// global functions

int
hal_ni_magnitude32f(
    const float* x,
    const float* y,
    float* dst,
    int len
    );

int
hal_ni_magnitude64f(
    const double* x,
    const double* y,
    double* dst,
    int len
    );