forked from cory/tildefriends
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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/*
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* Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_INTERNAL_NUMBERS_H
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# define OSSL_INTERNAL_NUMBERS_H
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# pragma once
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# include <limits.h>
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# if (-1 & 3) == 0x03 /* Two's complement */
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# define __MAXUINT__(T) ((T) -1)
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# define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
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# define __MININT__(T) (-__MAXINT__(T) - 1)
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# elif (-1 & 3) == 0x02 /* One's complement */
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# define __MAXUINT__(T) (((T) -1) + 1)
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# define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
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# define __MININT__(T) (-__MAXINT__(T))
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# elif (-1 & 3) == 0x01 /* Sign/magnitude */
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# define __MAXINT__(T) ((T) (((((T) 1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 2))))
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# define __MAXUINT__(T) ((T) (__MAXINT__(T) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 1))))
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# define __MININT__(T) (-__MAXINT__(T))
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# else
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# error "do not know the integer encoding on this architecture"
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# endif
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# ifndef INT8_MAX
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# define INT8_MIN __MININT__(int8_t)
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# define INT8_MAX __MAXINT__(int8_t)
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# define UINT8_MAX __MAXUINT__(uint8_t)
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# endif
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# ifndef INT16_MAX
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# define INT16_MIN __MININT__(int16_t)
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# define INT16_MAX __MAXINT__(int16_t)
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# define UINT16_MAX __MAXUINT__(uint16_t)
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# endif
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# ifndef INT32_MAX
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# define INT32_MIN __MININT__(int32_t)
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# define INT32_MAX __MAXINT__(int32_t)
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# define UINT32_MAX __MAXUINT__(uint32_t)
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# endif
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# ifndef INT64_MAX
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# define INT64_MIN __MININT__(int64_t)
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# define INT64_MAX __MAXINT__(int64_t)
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# define UINT64_MAX __MAXUINT__(uint64_t)
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# endif
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# ifndef INT128_MAX
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# if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16
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typedef __int128_t int128_t;
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typedef __uint128_t uint128_t;
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# define INT128_MIN __MININT__(int128_t)
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# define INT128_MAX __MAXINT__(int128_t)
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# define UINT128_MAX __MAXUINT__(uint128_t)
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# endif
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# endif
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# ifndef SIZE_MAX
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# define SIZE_MAX __MAXUINT__(size_t)
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# endif
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# ifndef OSSL_INTMAX_MAX
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# define OSSL_INTMAX_MIN __MININT__(ossl_intmax_t)
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# define OSSL_INTMAX_MAX __MAXINT__(ossl_intmax_t)
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# define OSSL_UINTMAX_MAX __MAXUINT__(ossl_uintmax_t)
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# endif
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#endif
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