tcalc

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

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