Function Write2DArray 

pub unsafe extern "C" fn Write2DArray(
    array: *mut *mut c_void,
    filename: *mut c_char,
    nrow: c_long,
    ncol: c_long,
    size: usize,
) -> c_int

Write data in a two dimensional array to a file. Data elements are have the number of bytes specified by size (use sizeof() when calling this function.