timersub           94 third_party/libevent/compat/sys/_libevent_time.h #define	timersub(tvp, uvp, vvp)						\
timersub           94 third_party/libevent/compat/sys/_time.h #define	timersub(tvp, uvp, vvp)						\
timersub          116 third_party/libusb/src/libusb/os/poll_windows.h #define timersub(a, b, result)                          \