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/*
* Copyright 2015-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_INTERNAL_NUMBERS_H
#define OSSL_INTERNAL_NUMBERS_H
#pragma once
#include <limits.h>
#if (-1 & 3) == 0x03 /* Two's complement */
#define __MAXUINT__(T) ((T) - 1)
#define __MAXINT__(T) ((T)((((T)1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
#define __MININT__(T) (-__MAXINT__(T) - 1)
#elif (-1 & 3) == 0x02 /* Ones' complement */
#define __MAXUINT__(T) (((T) - 1) + 1)
#define __MAXINT__(T) ((T)((((T)1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
#define __MININT__(T) (-__MAXINT__(T))
#elif (-1 & 3) == 0x01 /* Sign/magnitude */
#define __MAXINT__(T) ((T)(((((T)1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T)1) << ((sizeof(T) * CHAR_BIT) - 2))))
#define __MAXUINT__(T) ((T)(__MAXINT__(T) | (((T)1) << ((sizeof(T) * CHAR_BIT) - 1))))
#define __MININT__(T) (-__MAXINT__(T))
#else
#error "do not know the integer encoding on this architecture"
#endif
#ifndef INT8_MAX
#define INT8_MIN __MININT__(int8_t)
#define INT8_MAX __MAXINT__(int8_t)
#define UINT8_MAX __MAXUINT__(uint8_t)
#endif
#ifndef INT16_MAX
#define INT16_MIN __MININT__(int16_t)
#define INT16_MAX __MAXINT__(int16_t)
#define UINT16_MAX __MAXUINT__(uint16_t)
#endif
#ifndef INT32_MAX
#define INT32_MIN __MININT__(int32_t)
#define INT32_MAX __MAXINT__(int32_t)
#define UINT32_MAX __MAXUINT__(uint32_t)
#endif
#ifndef INT64_MAX
#define INT64_MIN __MININT__(int64_t)
#define INT64_MAX __MAXINT__(int64_t)
#define UINT64_MAX __MAXUINT__(uint64_t)
#endif
/*
* 64-bit processor with LP64 ABI
*/
#ifdef SIXTY_FOUR_BIT_LONG
#ifndef UINT32_C
#define UINT32_C(c) (c)
#endif
#ifndef UINT64_C
#define UINT64_C(c) (c##UL)
#endif
#endif
/*
* 64-bit processor other than LP64 ABI
*/
#ifdef SIXTY_FOUR_BIT
#ifndef UINT32_C
#define UINT32_C(c) (c##UL)
#endif
#ifndef UINT64_C
#define UINT64_C(c) (c##ULL)
#endif
#endif
#ifndef INT128_MAX
#if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16
typedef __int128_t int128_t;
typedef __uint128_t uint128_t;
#define INT128_MIN __MININT__(int128_t)
#define INT128_MAX __MAXINT__(int128_t)
#define UINT128_MAX __MAXUINT__(uint128_t)
#endif
#endif
#ifndef SIZE_MAX
#define SIZE_MAX __MAXUINT__(size_t)
#endif
#ifndef OSSL_INTMAX_MAX
#define OSSL_INTMAX_MIN __MININT__(ossl_intmax_t)
#define OSSL_INTMAX_MAX __MAXINT__(ossl_intmax_t)
#define OSSL_UINTMAX_MAX __MAXUINT__(ossl_uintmax_t)
#endif
#endif
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