to_f()
  public
  
    
    
Returns the value of time as a floating point number of seconds
since the Epoch.
t = Time.now
"%10.5f" % t.to_f   
t.to_i              
Note that IEEE 754 double is not accurate enough to represent the number of
nanoseconds since the Epoch.
   
  
    Show source    
    
      static VALUE
time_to_f(VALUE time)
{
    struct time_object *tobj;
    GetTimeval(time, tobj);
    return rb_Float(rb_time_unmagnify_to_float(tobj->timew));
}