intptr_t - Online Linux Manual PageSection : 3type
Updated : 2022-10-30
Source : Linux man-pages 6.03
NAMEintptr_t, uintptr_t − integer types wide enough to hold pointers
LIBRARYStandard C library (libc)
SYNOPSIS#include <stdint.h>typedef /* ... */ intptr_t;
typedef /* ... */ uintptr_t;#define INTPTR_WIDTH /* ... */
#define UINTPTR_WIDTH INTPTR_WIDTH#define INTPTR_MAX /* 2**(INTPTR_WIDTH − 1) − 1 */
#define INTPTR_MIN /* − 2**(INTPTR_WIDTH − 1) */
#define UINTPTR_MAX /* 2**UINTPTR_WIDTH − 1 */
DESCRIPTIONintptr_t is a signed integer type such that any valid (void *) value can be converted to this type and then converted back. It is capable of storing values in the range [INTPTR_MIN, INTPTR_MAX]. uintptr_t is an unsigned integer type such that any valid (void *) value can be converted to this type and then converted back. It is capable of storing values in the range [0, INTPTR_MAX]. The macros [U]INTPTR_WIDTH expand to the width in bits of these types. The macros [U]INTPTR_MAX expand to the maximum value that these types can hold. The macro INTPTR_MIN expands to the minimum value that intptr_t can hold. The length modifiers for the [u]intptr_t types for the printf(3) family of functions are expanded by the macros PRIdPTR, PRIiPTR, and PRIuPTR (defined in <inttypes.h>); resulting commonly in %"PRIdPTR" or %"PRIiPTR" for printing intptr_t values. The length modifiers for the [u]intptr_t types for the scanf(3) family of functions are expanded by the macros SCNdPTR, SCNiPTR, and SCNuPTR (defined in <inttypes.h>); resulting commonly in %"SCNuPTR" for scanning uintptr_t values.
STANDARDSC99 and later; POSIX.1-2001 and later.
NOTESThe following header also provides these types: <inttypes.h>.
SEE ALSOintmax_t(3type), void(3) 0
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