pub unsafe extern "C" fn sf_read_double(
sndfile: *mut SNDFILE,
ptr: *mut c_double,
items: sf_count_t,
) -> sf_count_tpub unsafe extern "C" fn sf_read_double(
sndfile: *mut SNDFILE,
ptr: *mut c_double,
items: sf_count_t,
) -> sf_count_t