1 /* 2 * Copyright 2015-2023 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 #pragma once 13 14 #include <limits.h> 15 16 #if (-1 & 3) == 0x03 /* Two's complement */ 17 18 #define __MAXUINT__(T) ((T) - 1) 19 #define __MAXINT__(T) ((T)((((T)1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T))) 20 #define __MININT__(T) (-__MAXINT__(T) - 1) 21 22 #elif (-1 & 3) == 0x02 /* Ones' complement */ 23 24 #define __MAXUINT__(T) (((T) - 1) + 1) 25 #define __MAXINT__(T) ((T)((((T)1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T))) 26 #define __MININT__(T) (-__MAXINT__(T)) 27 28 #elif (-1 & 3) == 0x01 /* Sign/magnitude */ 29 30 #define __MAXINT__(T) ((T)(((((T)1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T)1) << ((sizeof(T) * CHAR_BIT) - 2)))) 31 #define __MAXUINT__(T) ((T)(__MAXINT__(T) | (((T)1) << ((sizeof(T) * CHAR_BIT) - 1)))) 32 #define __MININT__(T) (-__MAXINT__(T)) 33 34 #else 35 36 #error "do not know the integer encoding on this architecture" 37 38 #endif 39 40 #ifndef INT8_MAX 41 #define INT8_MIN __MININT__(int8_t) 42 #define INT8_MAX __MAXINT__(int8_t) 43 #define UINT8_MAX __MAXUINT__(uint8_t) 44 #endif 45 46 #ifndef INT16_MAX 47 #define INT16_MIN __MININT__(int16_t) 48 #define INT16_MAX __MAXINT__(int16_t) 49 #define UINT16_MAX __MAXUINT__(uint16_t) 50 #endif 51 52 #ifndef INT32_MAX 53 #define INT32_MIN __MININT__(int32_t) 54 #define INT32_MAX __MAXINT__(int32_t) 55 #define UINT32_MAX __MAXUINT__(uint32_t) 56 #endif 57 58 #ifndef INT64_MAX 59 #define INT64_MIN __MININT__(int64_t) 60 #define INT64_MAX __MAXINT__(int64_t) 61 #define UINT64_MAX __MAXUINT__(uint64_t) 62 #endif 63 64 /* 65 * 64-bit processor with LP64 ABI 66 */ 67 #ifdef SIXTY_FOUR_BIT_LONG 68 #ifndef UINT32_C 69 #define UINT32_C(c) (c) 70 #endif 71 #ifndef UINT64_C 72 #define UINT64_C(c) (c##UL) 73 #endif 74 #endif 75 76 /* 77 * 64-bit processor other than LP64 ABI 78 */ 79 #ifdef SIXTY_FOUR_BIT 80 #ifndef UINT32_C 81 #define UINT32_C(c) (c##UL) 82 #endif 83 #ifndef UINT64_C 84 #define UINT64_C(c) (c##ULL) 85 #endif 86 #endif 87 88 #ifndef INT128_MAX 89 #if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16 90 typedef __int128_t int128_t; 91 typedef __uint128_t uint128_t; 92 #define INT128_MIN __MININT__(int128_t) 93 #define INT128_MAX __MAXINT__(int128_t) 94 #define UINT128_MAX __MAXUINT__(uint128_t) 95 #endif 96 #endif 97 98 #ifndef SIZE_MAX 99 #define SIZE_MAX __MAXUINT__(size_t) 100 #endif 101 102 #ifndef OSSL_INTMAX_MAX 103 #define OSSL_INTMAX_MIN __MININT__(ossl_intmax_t) 104 #define OSSL_INTMAX_MAX __MAXINT__(ossl_intmax_t) 105 #define OSSL_UINTMAX_MAX __MAXUINT__(ossl_uintmax_t) 106 #endif 107 108 #endif 109