Defines various limits relating to the internal representation of integer type data.
The following macro names are all implementation-defined.
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Constant
(macro)
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CHAR_BIT
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8
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Indicates the number of bits in a char type value.
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CHAR_MAX
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127
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Indicates the maximum value that can be represented by a char type variable.
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255*1
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CHAR_MIN
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−128
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Indicates the minimum value that can be represented by a char type variable.
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0*1
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SCHAR_MAX
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127
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Indicates the maximum value that can be represented by a signed char type variable.
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SCHAR_MIN
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−128
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Indicates the minimum value that can be represented by a signed char type variable.
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UCHAR_MAX
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255U
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Indicates the maximum value that can be represented by an unsigned char type variable.
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Constant
(macro)
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SHRT_MAX
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32767
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Indicates the maximum value that can be represented by a short type variable.
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SHRT_MIN
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−32768
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Indicates the maximum value that can be represented by a short type variable.
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USHRT_MAX
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65535U
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Indicates the maximum value that can be represented by an unsigned short type variable.
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INT_MAX
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217483647
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Indicates the maximum value that can be represented by an int type variable.
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INT_MIN
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−2147483647−1
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Indicates the minimum value that can be represented by an int type variable.
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UINT_MAX
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4294967295U
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Indicates the maximum value that can be represented by an unsigned int type variable.
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LONG_MAX
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217483647L
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Indicates the maximum value that can be represented by a long type variable.
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LONG_MIN
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−2147483647L−1L
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Indicates the minimum value that can be represented by a long type variable.
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ULONG_MAX
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4294967295U
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Indicates the maximum value that can be represented by an unsigned long type variable.
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LLONG_MAX
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9223372036854775807LL
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Indicates the maximum value that can be represented by a long long type variable.
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LLONG_MIN
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−9223372036854775807LL
−1LL
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Indicates the minimum value that can be represented by a long long type variable.
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ULLONG_MAX
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18446744073709551615ULL
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Indicates the maximum value that can be represented by an unsigned long long type variable.
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Notes 1. | Indicates the value that can be represented by a variable when the signed_char option is specified. |