1/* 2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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