2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright 2016 Cryptography Research, Inc.
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
10 * Originally written by Mike Hamburg
13 #ifndef OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
14 # define OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
16 # include "internal/constant_time.h"
18 # define ARCH_WORD_BITS 64
20 # define word_is_zero(a) constant_time_is_zero_64(a)
22 static ossl_inline uint128_t widemul(uint64_t a, uint64_t b)
24 return ((uint128_t) a) * b;
27 #endif /* OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H */