pub unsafe extern "C" fn DSA_meth_get_bn_mod_exp(
dsam: *const dsa_method,
) -> Option<unsafe extern "C" fn(_: *mut dsa_st, _: *mut bignum_st, _: *const bignum_st, _: *const bignum_st, _: *const bignum_st, _: *mut bignum_ctx, _: *mut bn_mont_ctx_st) -> i32>