gettimeofday is a syscall of x86-86 according to this page(just search gettimeofday in the box): int gettimeofday(struct timeval *tv, struct timezone *tz);
开发者_Python百科Why is it that when I shift the exit code, $?, in Perl by eight, I get 255 when I expect it to be -1?The exit status returned by \'wait()\' is a 16-bit value.Of those 16 bits, the hig
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