Function r_core::r_print_hexdiff

pub unsafe extern "C" fn r_print_hexdiff(
    p: *mut RPrint, 
    aa: c_ulonglong, 
    a: *const c_uchar, 
    ba: c_ulonglong, 
    b: *const c_uchar, 
    len: c_int, 
    scndcol: c_int
)