.bes.is

A rpn calculator

Available stack operations

dup

Duplicates the top value on the stack

[1, 2, 3] dup

[1, 1, 2, 3]

drop

Drops the top value on the stack

[1, 2, 3] drop

[2, 3]

swap

Swaps the top two values on the stack

[1, 2, 3] swap

[2, 1, 3]