xrpn 1.5

A full programming language and environment extending the features of the venerable HP calculator programmable calculators. With XRPN you can accomplish a wide range of modern programming tasks as well as running existing HP-41 FOCAL programs directly. XRPN gives modern life to tens of thousands of old HP calculator programs and opens the possibilities to many, many more. New in 1.5: You can now pipe commands into xrpn or run xrpn with the -e option to supply a program from the command line. Such string must have commands separated by a comma like this: '1, 2, +, sin, 1/x, prx'