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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | STANDARDS | HISTORY | NOTES | SEE ALSO |
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intptr_t(3type) intptr_t(3type)
intptr_t, uintptr_t - integer types wide enough to hold pointers
Standard C library (libc)
#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 */
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 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.
C11, POSIX.1-2008.
C99, POSIX.1-2001.
The following header also provides these types: <inttypes.h>.
intmax_t(3type), void(3)
Linux man-pages (unreleased) (date) intptr_t(3type)
Pages that refer to this page: intmax_t(3type), intN_t(3type), void(3type)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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