A dc implementation written in golang
dc is a very old reverse-polish notation calculator, written even before the C language was made.
In reverse-polish notation, instead of writing 2 + 2, you write 2 2 +. The operator comes later, while awkward at first glance, it can help avoid confusion at times
All commands must be space seperated, the only exception is conditional commands, like =m
- Decimal numbers supported
- Basic Arithmetic + modulo, square root, modular exponentiation
- A Stack to store numbers
- Registers, strings, and macros for extra command
- Conditional operators
- Loops can be implemented using registers, macros and conditionals
- For a full list of supported commands, do
?inside godc
- Unlike dc where the register can store multiple values, in godc a register can only store one value at a time
- In nested macros, you cannot just come out of 1 macro, you exit out of all of them (
Q) - Precision control not implemented
- Script (
-e) and file mode (-f) not implemented, only interactive mode supported for now - certain dc commands like
P, S, L, a, Z, X, :, ;not implemented