pub unsafe extern "C" fn EC_GROUP_cmp(
a: *const ec_group_st,
b: *const ec_group_st,
ctx: *mut bignum_ctx,
) -> i32
pub unsafe extern "C" fn EC_GROUP_cmp(
a: *const ec_group_st,
b: *const ec_group_st,
ctx: *mut bignum_ctx,
) -> i32