timeval operations NAME timeradd, timersub, timercmp, timerclear, timerisset - timeval operations LIBRARY Standard C library ( libc , -lc ) SY...timeval operations NAME timeradd, timersub, timercmp, timerclear, timerisset - timeval operations LIBRARY Standard C library ( libc , -lc ) SY...timeval operations NAME timeradd, timersub, timercmp, timerclear, timerisset - timeval operations LIBRARY Standard C library ( libc , -lc ) SY...timeval operations NAME timeradd, timersub, timercmp, timerclear, timerisset - timeval operations LIBRARY Standard C library ( libc , -lc ) SY...timeval operations NAME timeradd, timersub, timercmp, timerclear, timerisset - timeval operations LIBRARY Standard C library ( libc , -lc ) SY...