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 /* One's 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 89 # ifndef INT128_MAX 90 # if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16 91 typedef __int128_t int128_t; 92 typedef __uint128_t uint128_t; 93 # define INT128_MIN __MININT__(int128_t) 94 # define INT128_MAX __MAXINT__(int128_t) 95 # define UINT128_MAX __MAXUINT__(uint128_t) 96 # endif 97 # endif 98 99 # ifndef SIZE_MAX 100 # define SIZE_MAX __MAXUINT__(size_t) 101 # endif 102 103 # ifndef OSSL_INTMAX_MAX 104 # define OSSL_INTMAX_MIN __MININT__(ossl_intmax_t) 105 # define OSSL_INTMAX_MAX __MAXINT__(ossl_intmax_t) 106 # define OSSL_UINTMAX_MAX __MAXUINT__(ossl_uintmax_t) 107 # endif 108 109 #endif 110 111