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68 lines
1.9 KiB
68 lines
1.9 KiB
/* |
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* Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. |
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* |
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* Licensed under the OpenSSL license (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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# 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 SIZE_MAX |
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# define SIZE_MAX __MAXUINT__(size_t) |
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# endif |
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#endif |
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