iphone-how can i insert a mathematical function through a textfield?

[stemfrom]

hello everyone,

i want to make an iphone program that makes the graph of a mathematic function,like sin(x). So,i want to put the mathematical expression:sin(x) in a UITextfield and then take it and use it like a function.

does anyone know how to do this?

[Duncan C]

Originally Posted by stemfrom

hello everyone,

i want to make an iphone program that makes the graph of a mathematic function,like sin(x). So,i want to put the mathematical expression:sin(x) in a UITextfield and then take it and use it like a function.

does anyone know how to do this?

There's no simple API call to do this. You would need to either write a formula parser, or find a third party formula parser that you could use. I don't know if there are any open source solutions. I would suggest searching the web for open source Objective C formula parsers.


Edit: I did a little googling (using the search string "open source Objective C mathematical expression parser") and found this:

http://mac.softpedia.com/progDownloa...oad-86833.html