pub unsafe extern "C" fn xChannelOpen(
hDriver: CIFXHANDLE,
szBoard: *mut c_char,
ulChannel: u32,
phChannel: *mut CIFXHANDLE,
) -> i32pub unsafe extern "C" fn xChannelOpen(
hDriver: CIFXHANDLE,
szBoard: *mut c_char,
ulChannel: u32,
phChannel: *mut CIFXHANDLE,
) -> i32