clock - Reports CPU time used
Standard C Library (libc.so, libc.a)
clock_t clock (void);
Interfaces documented on this reference page conform to industry standards as follows:
clock(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
The clock() function reports the amount of processor time used by the calling process.
The clock() function returns the amount of processor time (in microseconds) used since the first call to clock(). If the processor time used is not available or its value cannot be represented, the clock() function returns (clock_t)-1.
Functions: ctime(3), getrusage(2), times(3), wait(2)
Standards: standards(5) delim off