Function harfbuzz_sys::hb_ot_layout_table_find_feature_variations

pub unsafe extern "C" fn hb_ot_layout_table_find_feature_variations(
    face: *mut hb_face_t, 
    table_tag: hb_tag_t, 
    coords: *const c_int, 
    num_coords: c_uint, 
    variations_index: *mut c_uint
) -> hb_bool_t