method
nsec
ruby latest stable - Class:
Time
nsec()public
Returns the number of nanoseconds for time.
t = Time .now #=> 2007年11月17日 15:18:03 +0900 "%10.9f" % t.to_f #=> "1195280283.536151409" t.nsec #=> 536151406
The lowest digits of #to_f and #nsec are different because IEEE 754 double is not accurate enough to represent the exact number of nanoseconds since the Epoch.
The more accurate value is returned by #nsec.
static VALUE
time_nsec(VALUE time)
{
struct time_object *tobj;
GetTimeval(time, tobj);
return rb_to_int(w2v(wmulquoll(wmod(tobj->timew, WINT2WV(TIME_SCALE)), 1000000000, TIME_SCALE)));
}