This XFCN will add a string of integers and return the result. It performs this simple task much faster than coding a similar routine in HyperTalk For instance, a Mac II will add 1600 integers with a HyperTalk script in about 110 seconds. The same 1600 integers will take 0.1 seconds using sumint!.
It will only add integers, which may be seperated by returns, commas, or spaces.