time_t3type
Integer time
Usage
#include <time.h>
typedef /* ... */ time_t;
#include <sys/types.h>
typedef /* ... */ suseconds_t; typedef /* ... */ useconds_t;
Library
Standard C library (libc)
Overview
- time_t
-
Used for time in seconds. According to POSIX, it is an integer type of at least 64 bits.
- suseconds_t
-
Used for time in microseconds. It is a signed integer type capable of storing values at least in the range [
-1,1000000].
- useconds_t
-
Used for time in microseconds. It is an unsigned integer type capable of storing values at least in the range [
0,1000000].
Notes
On some architectures, the width of time_t can be controlled with the feature test macro _TIME_BITS. See feature_test_macros(7).
The following headers also provide time_t: <sched.h>, <sys/msg.h>, <sys/select.h>, <sys/sem.h>, <sys/shm.h>, <sys/stat.h>, <sys/time.h>, <sys/types.h>, and <utime.h>.
The following headers also provide suseconds_t: <sys/select.h> and <sys/time.h>.
The following headers also provided useconds_t: <unistd.h>.
Releases
3 releases since Debian 12 (Bookworm); the text changed 2 times.