#terminal #calculator #repl #math #featureful #modes

app tcalc

A featureful calculator for when you want to do math in a terminal

18 stable releases

1.8.1 Jun 3, 2023
1.8.0 Oct 19, 2022
1.7.16 Jun 6, 2020
1.6.14 Jul 7, 2019
1.2.5 May 21, 2017

#506 in Command line utilities

Download history 16/week @ 2024-06-29 70/week @ 2024-07-27 87/week @ 2024-09-21

87 downloads per month

MIT license

47KB
1.5K SLoC

tcalc

A featureful calculator for when you want to do math in a terminal.

crates.io

Usage

tcalc supports two modes of usage: terminal and REPL.

# Terminal
$ tcalc '2**8 - 1' 'ans >> 1' 'abs(-13.7)'
255
127
13.7
# REPL
$ tcalc
> 2**8 - 1
  255
> ans >> 1
  127
> abs(-13.7)
  13.7
> exit

Installation

  1. Install Rust
  2. Run cargo install tcalc from your terminal

Syntax

Operator Description
( ) parens
- ! negate, bitwise NOT
** exponentiation
* / % multiplication, division, modulo
+ - addition, subtraction
++ -- increment, decrement (suffix)
<< >> left shift, right shift
& bitwise AND
^ bitwise XOR
| bitwise OR
= variable assignment
+= -= *= /= %= **= &= |= ^= <<= >>= compound assignment
func_name([arg, ...]) function call
Numeric Format Description
[0-9] decimal literal
[0-9].[0-9] fractional decimal literal
0b[0-1] binary literal
0o[0-7] octal literal
0d[0-9] decimal literal
0d[0-9].[0-9] fractional decimal literal
0x[0-9a-f] hexadecimal literal
Variable Description
e Euler's number (e)
phi Golden ratio (φ)
pi Archimedes' constant (π)
ans Result of previous expression
Function Description
abs(n) Returns the absolute value of n
ceil(n) Returns the smallest integer greater than or equal to n
floor(n) Returns the largest integer less than or equal to n
round(n) Returns the nearest integer to n; Round half-way cases away from 0.0

REPL

Command Description
exit exit the REPL
quit alias for exit

Dependencies

~3.5MB
~66K SLoC