Evaluate two expressions in the environment in which
time_wrap is called, and record the system
time associated with each expression.
time_wrap(expr1, expr2, units = "secs")first expression
second expression
time units with which to measure the system time
of each expression (see difftime)
list with three components: (1) time to evaluate the first expression, (2) time to evaluate the second expression, and (3) the time for the first expression divided by the time for the second
Other compare:
compare_grads(),
compare_sims()