time_t, suseconds_t, useconds_t - integer time
Standard C library (libc)
#include <time.h>
typedef /* ... */ time_t;
#include <sys/types.h>
typedef /* ... */ suseconds_t;
typedef /* ... */ useconds_t;
- time_t
- Used for time in seconds. According to POSIX, it is an integer type.
- suseconds_t
- Used for time in microseconds. It is a signed integer type capable of
storing values al least in the range [-1, 1000000].
- useconds_t
- Used for time in microseconds. It is an unsigned integer type capable of
storing values al least in the range [0, 1000000].
- time_t
- <sched.h> defines time_t since POSIX.1-2008.
- suseconds_t
- POSIX.1-2001 defined useconds_t in <unistd.h>
too.
time_t: C99 and later; POSIX.1-2001 and later.
suseconds_t, useconds_t: POSIX.1-2001 and later.
On some architectures, the width of time_t can be
controlled with the feature test macro _TIME_BITS.
- time_t
- 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>.
- suseconds_t
- The following headers also provide suseconds_t:
<sys/select.h> and <sys/time.h>.