Chronometer

(make-chronometer)

Returns a new chronometer object.

(chronometer-start! <chronometer>)

(chronometer-stop! <chronometer>)

(chronometer-reset! <chronometer>)

resets <chronometer> time to zero.

(chronometer-accuracy <chronometer>) ;; optional

(chronometer-time <chronometer>)

measures the elapsed accumulated time in real number of seconds between the starting times and stop times.