pub unsafe extern "C" fn gr_vec_append(
vec: *mut gr_vec_struct,
f: gr_srcptr,
ctx: *mut gr_ctx_struct,
) -> c_intpub unsafe extern "C" fn gr_vec_append(
vec: *mut gr_vec_struct,
f: gr_srcptr,
ctx: *mut gr_ctx_struct,
) -> c_int