Math-interpreter

A little math interpreter in python to graph functions and equations.

How to use

This program is console only, you just need to start the main file and everithing will works. There is no need for external modules.

Syntax

The syntax is similar to what you can write in a lot of others languages, there is math operators, functions and constants. Allowed symbols are all lower case ascii letters, numbers and -/*<=>^()[;]

a + b will add a and b

a - b will substact b to a

a * b will multiply a peer b

a / b will divide a peer b

a ^ b will do a power b

a == b will return if a equal to b

a <= b will return if a is less than or equal to b

a >= b will return if a is greater than or equal to b

a < b will return if a is less than b

a > b will return if a is grater than b

a <> b will return if a is not equal to b

function declaration

Syntax to create a new function is: name(arg[min;max][...],...) = expression Where:

• name is the name of the function
• arg is an argument name
• [min;max] is the allowed range of the argument, if you doesn't give any number, value will be infinite: [1;] mean "every number greater or equal than 1". You can also use open range to open range: ]1;] mean every number greater than 1.
• expression is the function body

Exemples:

f(x) = 2*x

f(x[0;]) = sqrt(2 * x) + 8

f(x[;1][1;]) = 1/x

Constants

name	description
pi	value of pi
e	value of exponential
tau	value of tau (around 2pi)

buildtin functions

There are are all basic math functions:

• sqrt
• sin
• cos
• tan
• acos
• asin
• atan
• atan2
• factorial
• ln
• log
• exp

And some spetial functions:

name	description
rad	convert degrees to radians
deg	convert radiand to degrees
abs	return absolute value of a number
plot	plot a function into borned graph
plot2d	plot a 2 paramaters function into a 2d graph
help	display function arguments and range
sum	calculate the sum of function values in a range
integral	calculate the integral of a function

Exemples