Function gsl_sys::gsl_vector_complex_long_double_alloc_from_block

pub unsafe extern "C" fn gsl_vector_complex_long_double_alloc_from_block(
    b: *mut gsl_block_complex_long_double, 
    offset: usize, 
    n: usize, 
    stride: usize
) -> *mut gsl_vector_complex_long_double