uintmax_t - greatest-width basic integer types

NAME LIBRARY SYNOPSIS DESCRIPTION STANDARDS HISTORY NOTES BUGS SEE ALSO

NAME

intmax_t, uintmax_t − greatest-width basic integer types

SYNOPSIS

#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 ## /* ... */

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.