2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright 2015 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 __C448_COMMON_H__
14 # define __C448_COMMON_H__ 1
16 # include <openssl/e_os2.h>
23 * Internal word types. Somewhat tricky. This could be decided separately per
24 * platform. However, the structs do need to be all the same size and
25 * alignment on a given platform to support dynamic linking, since even if you
26 * header was built with eg arch_neon, you might end up linking a library built
29 # ifndef C448_WORD_BITS
30 # if (defined(__ILP64__) || defined(__amd64__) || defined(__x86_64__) \
31 || (((__UINT_FAST32_MAX__)>>30)>>30))
32 # define C448_WORD_BITS 64 /* The number of bits in a word */
34 # define C448_WORD_BITS 32 /* The number of bits in a word */
38 # if C448_WORD_BITS == 64
39 /* Word size for internal computations */
40 typedef uint64_t c448_word_t;
41 /* Signed word size for internal computations */
42 typedef int64_t c448_sword_t;
43 /* "Boolean" type, will be set to all-zero or all-one (i.e. -1u) */
44 typedef uint64_t c448_bool_t;
45 /* Double-word size for internal computations */
46 typedef __uint128_t c448_dword_t;
47 /* Signed double-word size for internal computations */
48 typedef __int128_t c448_dsword_t;
49 # elif C448_WORD_BITS == 32
50 /* Word size for internal computations */
51 typedef uint32_t c448_word_t;
52 /* Signed word size for internal computations */
53 typedef int32_t c448_sword_t;
54 /* "Boolean" type, will be set to all-zero or all-one (i.e. -1u) */
55 typedef uint32_t c448_bool_t;
56 /* Double-word size for internal computations */
57 typedef uint64_t c448_dword_t;
58 /* Signed double-word size for internal computations */
59 typedef int64_t c448_dsword_t;
61 # error "Only supporting C448_WORD_BITS = 32 or 64 for now"
64 /* C448_TRUE = -1 so that C448_TRUE & x = x */
65 static const c448_bool_t C448_TRUE = 0 - (c448_bool_t)1;
67 /* C448_FALSE = 0 so that C448_FALSE & x = 0 */
68 static const c448_bool_t C448_FALSE = 0;
70 /* Another boolean type used to indicate success or failure. */
72 C448_SUCCESS = -1, /**< The operation succeeded. */
73 C448_FAILURE = 0 /**< The operation failed. */
76 /* Return success if x is true */
77 static ossl_inline c448_error_t c448_succeed_if(c448_bool_t x)
79 return (c448_error_t) x;
86 #endif /* __C448_COMMON_H__ */