관리-도구
편집 파일: struct_timeval.h
#ifndef __timeval_defined #define __timeval_defined 1 #include <bits/types.h> /* A time value that is accurate to the nearest microsecond but also has a range of years. */ struct timeval { __time_t tv_sec; /* Seconds. */ __suseconds_t tv_usec; /* Microseconds. */ }; #endif