1/*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef OSSL_INTERNAL_NUMBERS_H
11# define OSSL_INTERNAL_NUMBERS_H
12
13# include <limits.h>
14
15# if (-1 & 3) == 0x03 /* Two's complement */
16
17# define __MAXUINT__(T) ((T) -1)
18# define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
19# define __MININT__(T) (-__MAXINT__(T) - 1)
20
21# elif (-1 & 3) == 0x02 /* One's complement */
22
23# define __MAXUINT__(T) (((T) -1) + 1)
24# define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
25# define __MININT__(T) (-__MAXINT__(T))
26
27# elif (-1 & 3) == 0x01 /* Sign/magnitude */
28
29# define __MAXINT__(T) ((T) (((((T) 1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 2))))
30# define __MAXUINT__(T) ((T) (__MAXINT__(T) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 1))))
31# define __MININT__(T) (-__MAXINT__(T))
32
33# else
34
35# error "do not know the integer encoding on this architecture"
36
37# endif
38
39# ifndef INT8_MAX
40# define INT8_MIN __MININT__(int8_t)
41# define INT8_MAX __MAXINT__(int8_t)
42# define UINT8_MAX __MAXUINT__(uint8_t)
43# endif
44
45# ifndef INT16_MAX
46# define INT16_MIN __MININT__(int16_t)
47# define INT16_MAX __MAXINT__(int16_t)
48# define UINT16_MAX __MAXUINT__(uint16_t)
49# endif
50
51# ifndef INT32_MAX
52# define INT32_MIN __MININT__(int32_t)
53# define INT32_MAX __MAXINT__(int32_t)
54# define UINT32_MAX __MAXUINT__(uint32_t)
55# endif
56
57# ifndef INT64_MAX
58# define INT64_MIN __MININT__(int64_t)
59# define INT64_MAX __MAXINT__(int64_t)
60# define UINT64_MAX __MAXUINT__(uint64_t)
61# endif
62
63# ifndef SIZE_MAX
64# define SIZE_MAX __MAXUINT__(size_t)
65# endif
66
67#endif
68
69