arithmetic-evaluator

Runs math expression through parser and then evaluate the value.

Getting Started

for installing run

$ git clone https://github.com/itamar244/arithmetic-evaluator.git
$ npm install

some scripts are added for convenience

$ npm start
$ npm test
$ npm run build

get master branch for better supports or get ast-parser for faster and revisted parser ad evaluator.

Features

• the following operators are legal: +, -, *, /, %, ^.

• numbers can be both integers, floating numbers and Infinity.

• the following functions are available:

  • cos (length: 1)
  • sin (length: 1)
  • tan (length: 1)
  • abs (length: 1)
  • log (length: 1)
  • floor (length: 1)
  • sqrt (length: 1)
  • max (length: as many as you want)

• constants can be used. they need to be in capital letters only.
  they are the same as the constants in Math object.

• parameters can be used too. just use lower-cased chars and for each char the program will ask for its value.

• also supports equations. just put one parameter in the equation and add = sign.

Language Features

Import Statements

this statement will add file’S progmam to the top of the file
import '<FILE_NAME>'
FILE_NAME - relative path to the current filename

Function Statements

this statements creates a function reusable code
func <NAME>(...PARAMS) <STATEMENT>

NAME - the name of the function
PARAMS - list of parameters seperated by commas
STATEMENT - the statement to evaluate and return from the function