[331] | 1 | /*
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| 2 | * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #ifndef HEADER_NUMBERS_H
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| 11 | # define HEADER_NUMBERS_H
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| 12 |
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| 13 | # include <limits.h>
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| 14 |
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| 15 | # if (-1 & 3) == 0x03 /* Two's complement */
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| 16 |
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| 17 | # define __MAXUINT__(T) ((T) -1)
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| 18 | # define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
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| 19 | # define __MININT__(T) (-__MAXINT__(T) - 1)
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| 20 |
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| 21 | # elif (-1 & 3) == 0x02 /* One's complement */
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| 22 |
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| 23 | # define __MAXUINT__(T) (((T) -1) + 1)
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| 24 | # define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
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| 25 | # define __MININT__(T) (-__MAXINT__(T))
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| 26 |
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| 27 | # elif (-1 & 3) == 0x01 /* Sign/magnitude */
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| 28 |
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| 29 | # define __MAXINT__(T) ((T) (((((T) 1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 2))))
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| 30 | # define __MAXUINT__(T) ((T) (__MAXINT__(T) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 1))))
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| 31 | # define __MININT__(T) (-__MAXINT__(T))
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| 32 |
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| 33 | # else
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| 34 |
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| 35 | # error "do not know the integer encoding on this architecture"
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| 36 |
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| 37 | # endif
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| 38 |
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| 39 | # ifndef INT8_MAX
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| 40 | # define INT8_MIN __MININT__(int8_t)
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| 41 | # define INT8_MAX __MAXINT__(int8_t)
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| 42 | # define UINT8_MAX __MAXUINT__(uint8_t)
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| 43 | # endif
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| 44 |
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| 45 | # ifndef INT16_MAX
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| 46 | # define INT16_MIN __MININT__(int16_t)
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| 47 | # define INT16_MAX __MAXINT__(int16_t)
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| 48 | # define UINT16_MAX __MAXUINT__(uint16_t)
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| 49 | # endif
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| 50 |
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| 51 | # ifndef INT32_MAX
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| 52 | # define INT32_MIN __MININT__(int32_t)
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| 53 | # define INT32_MAX __MAXINT__(int32_t)
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| 54 | # define UINT32_MAX __MAXUINT__(uint32_t)
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| 55 | # endif
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| 56 |
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| 57 | # ifndef INT64_MAX
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| 58 | # define INT64_MIN __MININT__(int64_t)
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| 59 | # define INT64_MAX __MAXINT__(int64_t)
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| 60 | # define UINT64_MAX __MAXUINT__(uint64_t)
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| 61 | # endif
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| 62 |
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| 63 | # ifndef SIZE_MAX
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| 64 | # define SIZE_MAX __MAXUINT__(size_t)
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| 65 | # endif
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| 66 |
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| 67 | #endif
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| 68 |
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