Function gsl_sys::gsl_matrix_complex_long_double_alloc_from_matrix

pub unsafe extern "C" fn gsl_matrix_complex_long_double_alloc_from_matrix(
    b: *mut gsl_matrix_complex_long_double, 
    k1: usize, 
    k2: usize, 
    n1: usize, 
    n2: usize
) -> *mut gsl_matrix_complex_long_double