uintmax_t

(3type)

greatest-width basic integer types

Library functionsmanpages-dev 6.9.1-1also documents intmax_t

#include <stdint.h> typedef /* ... */ intmax_t; typedef /* ... */ uintmax_t; #define INTMAX_WIDTH /* ... */ #define UINTMAX_WIDTH INTMAX_WIDTH #define INTMAX_MAX /* 2**(INTMAX_WIDTH - 1) - 1 */ #define INTMAX_MIN /* - 2**(INTMAX_WIDTH - 1) */ #define UINTMAX_MAX /* 2**UINTMAX_WIDTH - 1 */ #define INTMAX_C(c) c ## /* ... */ #define UINTMAX_C(c) c ## /* ... */

LIBRARY

Standard C library (libc)

DESCRIPTION

intmax_t is a signed integer type capable of representing any value of any basic signed integer type supported by the implementation. It is capable of storing values in the range [INTMAX_MIN, INTMAX_MAX].

uintmax_t is an unsigned integer type capable of representing any value of any basic unsigned integer type supported by the implementation. It is capable of storing values in the range [0, UINTMAX_MAX].

The macros [U]INTMAX_WIDTH expand to the width in bits of these types.

The macros [U]INTMAX_MAX expand to the maximum value that these types can hold.

The macro INTMAX_MIN expands to the minimum value that intmax_t can hold.

The macros [U]INTMAX_C() expand their argument to an integer constant of type [u]intmax_t.

The length modifier for [u]intmax_t for the printf(3) and the scanf(3) families of functions is j; resulting commonly in %jd, %ji, %ju, or %jx for printing [u]intmax_t values.

STANDARDS

C11, POSIX.1-2008.

HISTORY

C99, POSIX.1-2001.

NOTES

The following header also provides these types: <inttypes.h>.

BUGS

These types may not be as large as extended integer types, such as __int128