A very simple calculator

Find a file

quetzcolito 6edc8a33e0 add a README		2025-08-09 11:24:24 +02:00
.envrc	initial commit	2025-08-01 15:03:40 +02:00
.gitignore	add gitignore	2025-08-01 15:04:25 +02:00
flake.lock	initial commit	2025-08-01 15:03:40 +02:00
flake.nix	finalize the core program	2025-08-03 17:09:20 +02:00
go.mod	stuff	2025-08-03 14:07:05 +02:00
main.go	support ** as ^	2025-08-09 10:38:15 +02:00
operations.go	fix typo in abs application x.x	2025-08-09 02:49:42 +02:00
README.md	add a README	2025-08-09 11:24:24 +02:00
tree.go	finalize the core program	2025-08-03 17:09:20 +02:00

Putah - Just a Calculator

Might as well add a Readme.

When called, concatenates all arguments and tries to evaluate them with some basic math. Made it to be used in my Quickshell Widgets.

Behaviour:

Support for basic Operators, some 1 Argument Functions and Constants.
The functions behave like their golang math equivalents.
Support for Parentheses.
Parentheses around function arguments are optional (so sqrt 4 is valid and evaluates to 2).
When an Operator is omitted between 2 distinguishable expressions, Multiplication is assumed (4(2-3) = -4).
Uses Floating point math with no special handling so expect some inaccuracies (sin(pi) != 0)
All Text is Case-insensitive.
Returns NaN when there is a Syntax Error.
In theory Operators, Functions and Constants are pretty extensible in operations.go, but I cant think of any more to add.

-, +, */x, /, %, ^/**

log/log10, ln/loge, lb/log2, sqrt, sin, asin, cos, acos, tan, atan, abs, -

pi, e, phi