tcalc is a zsh `time calculator': it understands and displays times in hh:mm:ss.ddd format (when the dimension of the expression is a time).
`Standard' calculus:
% 1 + 2 * 37
If one wants to run a 5000m in 15 minutes on an outdoor track, how long should each lap last?
% 15:0 / 12.50:1:12.000
Some code ran for 14:32 on a specific input. An optimised version takes 1:57. How many times faster is it?
% 14:32 / 1:577.4529914529914532
time indicates a command took 14348 seconds. How long is it?
% 0:143483:59:8.000
tcalc-0.1.tgz. This is released under GPL.