pub unsafe extern "C" fn EC_GROUP_get_cofactor(
group: *const ec_group_st,
cofactor: *mut bignum_st,
ctx: *mut bignum_ctx,
) -> i32
pub unsafe extern "C" fn EC_GROUP_get_cofactor(
group: *const ec_group_st,
cofactor: *mut bignum_st,
ctx: *mut bignum_ctx,
) -> i32