Integer Limits

Defines macros that describe the numeric properties of the types defined in stdint.h and other files in the standard library.

Macro names beginning with INT specify properties for signed integer types and names beginning with UINT specify properties for unsigned integers. A macro name ending with MIN specifies the minimum value that its corresponding signed integer type may represent. An unsigned integer type's minimum value is always 0. A macro name ending with MAX defines the maximum value that its corresponding integer value can represent.

These limit values are:

• Exact-width integer limits - These macros describe the limits of the exact-width integer types defined in file stddint.h. The names of these macros are INTn_MIN, INTn_MAX, and UINTn_MAX, where n represents the number of bits in the corresponding exactwidth integer type.
• Minimum-width integer limits - These macros describe the limits of the minimum-width integer types defined in file stddint.h. The names of these macros are INT_LEASTn_MIN, INT_LEASTn_MAX, and UINT_LEASTn_MAX, where n represents the number of bits in the corresponding minimum-width integer type.
• Fastest integers - These macros describe the limits of the fastest-width integer types defined in file stddint.h. The names of these macros are INT_FASTn_MIN, INT_FASTn_MAX, and UINT_FASTn_MAX, where n represents the number of bits in the corresponding fastest-width integer type.
• Pointer-width integer limits - These macros describe the limits of the pointer-width integer types defined in file stddint.h. The names of these macros are INTPTR_MIN, INTPTR_MAX, and UINTPTR_MAX.
• Greatest-width integer limits - These macros describe the limits of the greatest-width integer types defined in file stddint.h. The names of these macros are INTMAX_MIN, INTMAX_MAX, and UINTMAX_MAX.
• Pointer difference limits - These macros describe the limits of the ptrdiff_t type defined in file stddef.h. The names of these macros are PTRDIFF_MIN, PTRDIFF_MAX.
• Atomic signal value limits - These macros describe the limits of the sig_atomic_t type defined in file signal.h. The names of these macros are SIG_ATOMIC_MIN, SIG_ATOMIC_MAX.
• Operator sizeof() value limits - This macro describe the limit of the size_t type defined in file stddef.h. The name of this macros is SIZE_MAX.
• Wide character value limits - These macros describe the limits of the wchar_t type defined in file stddef.h. The names of these macros are WCHAR_MIN, WCHAR_MAX.
• Wide character integer value limits - These macros describe the limits of the wint_t type defined in file wchar.h.The names of these macros are WINT_MIN, WINT_MAX.