docteur-lalla / glorious-calc

CLI calculator for genuises in a hurry

glorious-calc

CLI calculator for genuises in a hurry

Glorious Calc provides the user a quick access to a calculator. It uses the program's arguments as a single formula to resolve. It can handle integers, real numbers and complex numbers ! Its goal is to provide the user a quick access to a computation system without having to launch a programming-language interpreter (like Python or Ruby).

The syntax of the glorious calc is similar to the classic mathematical syntax. It accepts pairs of (), [] and {} as parentheses, Basic operations are allowed (+ - * /) plus the power operation (^) and the modulo (mod). Functions have the lowest priority in calculus and do not require parentheses, so sqrt 5 + 3 = sqrt(5 + 3).

Example :

$ calc 5 + 8 - 4i
13 - 4i

$ calc 6 / [2 + i]
2.4 - 1.2i

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Glorious Calc has some built-in functions accessible directly.

• sqrt : square root
• cos : cosine
• sin : sine
• tan : tangent
• abs : absolute value
• ln : natural logarithm
• log : base 10 logarithm
• exp : exponential
• conj : conjugate complex
• Re : real part
• Im : Imaginary part

Some custom functions can be created by defining a context before the formula. This is made with the following syntax :

let *function-name* *argument-list* = *function-formula* : *formula*
$ calc let f x = 5i + x : f 7
7 + 5i

Each declaration must be separated of the following one using a comma. Functions that take several arguments are called like the others but with their arguments separated by a comma :

$ calc let f x y = 2 + x / y, x = 4 : f x, 5
2.8