pub unsafe extern "C" fn triangulate(
arg1: *mut c_char,
arg2: *mut triangulateio,
arg3: *mut triangulateio,
arg4: *mut triangulateio,
)pub unsafe extern "C" fn triangulate(
arg1: *mut c_char,
arg2: *mut triangulateio,
arg3: *mut triangulateio,
arg4: *mut triangulateio,
)