https://github.com/leucos/gorpn

Simple yet efficient Golang RPN terminal calculator
https://github.com/leucos/gorpn

go golang rpn rpn-calculator

Last synced: 2 months ago
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Simple yet efficient Golang RPN terminal calculator

• Host: GitHub
• URL: https://github.com/leucos/gorpn
• Owner: leucos
• Created: 2018-10-18T21:28:01.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2021-10-04T14:27:54.000Z (over 3 years ago)
• Last Synced: 2025-01-26T11:44:00.413Z (4 months ago)
• Topics: go, golang, rpn, rpn-calculator
• Language: Go
• Size: 31.3 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

        
# Golang RPN calc

**DEPRECATED** 

See https://github.com/leucos/grpn instead.

[![CircleCI](https://circleci.com/gh/leucos/gorpn/tree/master.svg?style=svg)](https://circleci.com/gh/leucos/gorpn/tree/master)

Simple yet efficient terminal RPN calcultator.

[![asciicast](https://asciinema.org/a/207322.png)](https://asciinema.org/a/207322)

## Installation

### Binary

Grab a [release](https://github.com/leucos/gorpn/releases).

### From sources

Using Go 1.11:

```

export GO111MODULES=on

git clone https://github.com/leucos/gorpn

cd gorpn

go install

```

## Supported ops

  - `+`, `-`, `*`, `/`, `%`

  - `pow`, `^` (e.g. `2⏎3⏎pow⏎` yields `8`), `sqrt`

  - `sin`, `cos`, `tan`, `asin`, `acos`, `atan`, 

  - `abs`, `ceil`, `floor`, `round`, `trunc` (e.g. `3.14159⏎2⏎trunc⏎`)

  - `rad`, `deg` for angle modes

  - `dup` (a.k.a empty input and ⏎) duplicates last stack item

  - `swap` exchanges last 2 items in the stack

  - `drop` removes last item in the stack

  - `pi`, `phi` constants

  - `precision`, `#` (e.g. `2⏎precision⏎` or ``2⏎#⏎`) limits number of displayed digits

  - `cu1_cu2` returns exchange rate between `cu1` and `cu2` (e.g. `isk_eur` for xchange rate between ISK and EUR)

  - `quit` or `` exists `gorpn`

  - `/` key walks input history up or down

Mode is shown in the bottom line. If an error occurs, a red `E` will

show at the bottom right corner.

## TODO

- [ ] undo

- [ ] non-intercative mode support (stdin / stdout)

- [ ] sentence recall (vs token recall) with PgUp/PgDown

- [ ] stack save on exit / load on start

- [ ] completion

## Licence

DWTFYWPL

## Authors

@leucos

Inspired by https://medium.com/@jhh3/anonymous-functions-and-reflection-in-go-71274dd9e83a