Integral Limits

The limits (constant names, meanings, and values) for integral types are defined in the standard include file LIMITS.H. They are shown in Table 2.6.

Table 2.6 Limits for Integral Types

Constant Meaning Value

CHAR_BIT Number of bits in the smallest variable that is not a bit field. 8
SCHAR_MIN Minimum value for a variable of type signed char., –127  
SCHAR_MAX Maximum value for a variable of type signed char., 127  
UCHAR_MAX Maximum value for a variable of type unsigned char. 255 (0xff)
CHAR_MIN Minimum value for a variable of type char., Same as –127; 0 if /J option used.  
CHAR_MAX Maximum value for a variable of type char., Same as 127; 255 if /J option used.  
MB_LEN_MAX Maximum number of bytes in a multicharacter constant., 2  
SHRT_MIN Minimum value for a variable of type short., –32767  
SHRT_MAX Maximum value for a variable of type short., 32767  
USHRT_MAX Maximum value for a variable of type unsigned short. 65535 (0xffff)
INT_MIN Minimum value for a variable of type int1., –32767  
INT_MAX Maximum value for a variable of type int2., 32767  
UINT_MAX Maximum value for a variable of type unsigned int3., 65535 (0xffff)  
LONG_MIN Minimum value for a variable of type long., –2147483647  
LONG_MAX Maximum value for a variable of type long., 2147483647  
ULONG_MAX Maximum value for a variable of type unsigned long. 4294967295 (0xffffffff)

1The value for INT_MIN is –2147483648 for 32-bit target compilations

2The value for INT_MAX is 2147483647 for 32-bit target compilations

3The value for UINT_MAX is 4294967295 (0xffffffff) for 32-bit target compilations