In C++ programming, there are macros for the fixed-width integer type that allow you to obtain minimum and maximum possible values. In this post, we explain these macros for integer constants in modern C++.
Table of Contents
What are the macros for minimum signed integer constants in modern C++?
Here are the macros for minimum signed integer constants in general form in C++:
Integer Constant
Description
INT8_MIN
min. value of 8 bits signed integer type
INT16_MIN
min. value of 16 bits signed integer type
INT32_MIN
min. value of 32 bits signed integer type
INT64_MIN
min. value of 64 bits signed integer type
Here are the macros for minimum signed integer constants in fastest form:
Integer Constant
Description
INT_FAST8_MIN
min. value of 8 bits fast signed integer type
INT_FAST16_MIN
min. value of 16 bits fast signed integer type
INT_FAST32_MIN
min. value of 32 bits fast signed integer type
INT_FAST64_MIN
min. value of 64 bits fast signed integer type
Here are the macros for minimum signed integer constants in smallest form:
Integer Constant
Description
INT_LEAST8_MIN
min. value of 8 bits fast signed integer type
INT_LEAST16_MIN
min. value of 16 bits fast signed integer type
INT_LEAST32_MIN
min. value of 32 bits fast signed integer type
INT_LEAST64_MIN
min. value of 64 bits fast signed integer type
Integer Constant
Description
INTMAX_MIN
min. value of std::intmax_t
Integer Constant
Description
INTPTR_MIN
min. value of std::intptr_t
What are the macros for the maximum signed integer constants in modern C++?
Here are the macros for maximum signed integer constants in general form in C++:
Integer Constant
Description
INT8_MAX
max. value of 8 bits signed integer type
INT16_MAX
max. value of 16 bits signed integer type
INT32_MAX
max. value of 32 bits signed integer type
INT64_MAX
max. value of 64 bits signed integer type
Here are the macros for maximum signed integer constants in fastest form:
Integer Constant
Description
INT_FAST8_MAX
max. value of 8 bits fast signed integer type
INT_FAST16_MAX
max. value of 16 bits fast signed integer type
INT_FAST32_MAX
max. value of 32 bits fast signed integer type
INT_FAST64_MAX
max. value of 64 bits fast signed integer type
Here are the macros for maximum signed integer constants in smallest form:
Integer Constant
Description
INT_LEAST8_MAX
max. value of 8 bits fast signed integer type
INT_LEAST16_MAX
max. value of 16 bits fast signed integer type
INT_LEAST32_MAX
max. value of 32 bits fast signed integer type
INT_LEAST64_MAX
max. value of 64 bits fast signed integer type
Integer Constant
Description
INTMAX_MAX
max. value of std::intmax_t
Integer Constant
Description
INTPTR_MAX
max. value of std::intptr_t
What are the macros for the minimum unsigned integer constants in modern C++?
Here are the macros for the minimum unsigned integer constants in general form in C++:
Integer Constant
Description
UINT8_MIN
min. value of 8 bits unsigned integer type
UINT16_MIN
min. value of 16 bits unsigned integer type
UINT32_MIN
min. value of 32 bits unsigned integer type
UINT64_MIN
min. value of 64 bits unsigned integer type
Here are the macros for minimum unsigned integer constants in fastest form:
Integer Constant
Description
UINT_FAST8_MIN
min. value of 8 bits fast unsigned integer type
UINT_FAST16_MIN
min. value of 16 bits fast unsigned integer type
UINT_FAST32_MIN
min. value of 32 bits fast unsigned integer type
UINT_FAST64_MIN
min. value of 64 bits fast unsigned integer type
Here are the macros for minimum unsigned integer constants in smallest form:
Integer Constant
Description
UINT_LEAST8_MIN
min. value of 8 bits fast unsigned integer type
UINT_LEAST16_MIN
min. value of 16 bits fast unsigned integer type
UINT_LEAST32_MIN
min. value of 32 bits fast unsigned integer type
UINT_LEAST64_MIN
min. value of 64 bits fast unsigned integer type
Integer Constant
Description
UINTMAX_MIN
min. value of std::uintmax_t
Integer Constant
Description
UINTPTR_MIN
min. value of std::uintptr_t
What are the macros for the maximum unsigned integer constants in modern C++?+
Here are the macros for the maximum signed integer constants in general form in C++.
Integer Constant
Description
UINT8_MAX
max. value of 8 bits unsigned integer type
UINT16_MAX
max. value of 16 bits unsigned integer type
UINT32_MAX
max. value of 32 bits unsigned integer type
UINT64_MAX
max. value of 64 bits unsigned integer type
Here are the macros for the maximum unsigned integer constants in fastest form:
Integer Constant
Description
UINT_FAST8_MAX
max. value of 8 bits fast unsigned integer type
UINT_FAST16_MAX
max. value of 16 bits fast unsigned integer type
UINT_FAST32_MAX
max. value of 32 bits fast unsigned integer type
UINT_FAST64_MAX
max. value of 64 bits fast unsigned integer type
Here are the macros for maximum unsigned integer constants in smallest form:
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Dr. Yilmaz Yoru has 35+ years of coding with more than 30+ programming languages, mostly C++ on Windows, Android, Mac-OS, iOS, Linux, and some other operating systems. He graduated and received his MSc and PhD degrees from the Department of Mechanical Engineering of Eskisehir Osmangazi University. He is the founder and CEO of ESENJA LLC Company. His interests are Programming, Thermodynamics, Fluid Mechanics, Artificial Intelligence, 2D & 3D Designs, and high-end innovations.
