| [aad342c] | 1 | /*
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| 2 | An instance of limits.h using minimal values. See C11 5.2.4.2.1.
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| 3 | There is also a choice involving the char type:
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| 4 |
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| 5 | "If the value of an object of type char is treated as a signed integer
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| 6 | when used in an expression, the value of CHAR_MIN shall be the same as
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| 7 | that of SCHAR_MIN and the value of CHAR_MAX shall be the same as that
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| 8 | of SCHAR_MAX. Otherwise, the value of CHAR_MIN shall be 0 and the
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| 9 | value of CHAR_MAX shall be the same as that of UCHAR_MAX.20) The value
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| 10 | UCHAR_MAX shall equal 2CHAR_BIT − 1."
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| 11 |
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| 12 | This instance chooses to make char a signed integer type.
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| 13 | */
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| 14 |
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| 15 | #ifndef _LIMITS_
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| 16 | #define _LIMITS_
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| 17 |
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| 18 | // number of bits for smallest object that is not a bit-field (byte)
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| 19 | #define CHAR_BIT 8
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| 20 |
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| 21 | // minimum value for an object of type signed char
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| 22 | #define SCHAR_MIN -127 //−(2^7−1)
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| 23 |
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| 24 | //maximum value for an object of type signed char
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| 25 | #define SCHAR_MAX +127 //2^7−1
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| 26 |
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| 27 | // maximum value for an object of type unsigned char
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| 28 | #define UCHAR_MAX 255 //2^8−1
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| 29 |
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| 30 | // minimum value for an object of type char
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| 31 | #define CHAR_MIN -127
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| 32 |
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| 33 | //maximum value for an object of type char
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| 34 | #define CHAR_MAX +127
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| 35 |
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| 36 | // maximum number of bytes in a multibyte character, for any supported locale
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| 37 | #define MB_LEN_MAX 1
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| 38 |
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| 39 | // minimum value for an object of type short int
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| 40 | #define SHRT_MIN -32767 //−(2^15−1)
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| 41 |
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| 42 | // maximum value for an object of type short int
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| 43 | #define SHRT_MAX +32767 //2^15−1
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| 44 |
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| 45 | // maximum value for an object of type unsigned short int
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| 46 | #define USHRT_MAX 65535 //2^16−1
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| 47 |
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| 48 | // minimum value for an object of type int
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| 49 | #define INT_MIN -32767 //−(2^15−1)
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| 50 |
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| 51 | // maximum value for an object of type int
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| 52 | #define INT_MAX +32767 //2^15−1
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| 53 |
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| 54 | // maximum value for an object of type unsigned int
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| 55 | #define UINT_MAX 65535 //2^16−1
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| 56 |
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| 57 | // minimum value for an object of type long int
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| 58 | #define LONG_MIN -2147483647 //−(2^31−1)
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| 59 |
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| 60 | // maximum value for an object of type long int
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| 61 | #define LONG_MAX +2147483647 //2^31−1
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| 62 |
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| 63 | // maximum value for an object of type unsigned long int
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| 64 | #define ULONG_MAX 4294967295 //2^32−1
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| 65 |
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| 66 | // minimum value for an object of type long long int
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| 67 | #define LLONG_MIN -9223372036854775807 //−(2^63−1)
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| 68 |
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| 69 | // maximum value for an object of type long long int
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| 70 | #define LLONG_MAX +9223372036854775807 //2^63−1
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| 71 |
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| 72 | // maximum value for an object of type unsigned long long int
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| 73 | #define ULLONG_MAX 18446744073709551615 //2^64−1
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| 74 | #endif
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