iOS isNumeric function equivalent in Obj-C/iPhone SDK?

[atmenterprises]

I'm trying to take an input value in a textfield and see if it's actually a numeric value (int or float) before continuing to process the value. Is there any type of function in objective-c that accomplishes this?

 

[atmenterprises]

Found the best answer that I could after searching Google over the last few days: isnan() function can take a double and returns a BOOL. I extracted the doubleValue from a textfield and passed it to the isnan() function and it seems to work. Just FYI for any of you that may want this info in the future.

 

[xqterry]

Found the best answer that I could after searching Google over the last few days: isnan() function can take a double and returns a BOOL. I extracted the doubleValue from a textfield and passed it to the isnan() function and it seems to work. Just FYI for any of you that may want this info in the future.

thanks