suseconds_t
(3type)integer time
#include <time.h> typedef /* ... */ time_t; #include <sys/types.h> typedef /* ... */ suseconds_t; typedef /* ... */ useconds_t;
LIBRARY
DESCRIPTION
- 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 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].
STANDARDS
- time_t
- C11, POSIX.1-2008.
- suseconds_t
- useconds_t
- POSIX.1-2008.
HISTORY
- time_t
- C89, POSIX.1-2001.
- suseconds_t
- useconds_t
- POSIX.1-2001.
<sched.h> defines time_t since POSIX.1-2008.
POSIX.1-2001 defined useconds_t in <unistd.h> too.
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>.