1 /*
2  * Copyright 2017-2022 The OpenSSL Project Authors. All Rights Reserved.
3  * Copyright 2016 Cryptography Research, Inc.
4  *
5  * Licensed under the Apache License 2.0 (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
9  *
10  * Originally written by Mike Hamburg
11  */
12 
13 #ifndef OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
14 # define OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
15 
16 # include "internal/constant_time.h"
17 
18 # define ARCH_WORD_BITS 64
19 
20 # define word_is_zero(a)     constant_time_is_zero_64(a)
21 
widemul(uint64_t a,uint64_t b)22 static ossl_inline uint128_t widemul(uint64_t a, uint64_t b)
23 {
24     return ((uint128_t) a) * b;
25 }
26 
27 #endif                          /* OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H */
28