intptr_t(3type) intptr_t(3type) NAME intptr_t, uintptr_t - integer types wide enough to hold pointers LIBRARY Standard 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 */ DESCRIPTION intptr_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 ca- pable 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 %"PRI- iPTR" 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>); re- sulting commonly in %"SCNuPTR" for scanning uintptr_t values. STANDARDS C99 and later; POSIX.1-2001 and later. NOTES The following header also provides these types: <inttypes.h>. SEE ALSO intmax_t(3type), void(3) Linux man-pages 6.03 2022-10-30 intptr_t(3type)
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