Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!tahoe!wrc.unr.edu!kevinb
From: kevinb@wrc.unr.edu (Kevin Brewer)
Newsgroups: comp.sys.mac.programmer
Subject: XCMDs I/O question
Message-ID: <6062@tahoe.unr.edu>
Date: 15 Apr 91 19:22:54 GMT
Sender: news@tahoe.unr.edu
Reply-To: kevinb@wrc.unr.edu (Kevin Brewer)
Distribution: na
Organization: DRI-WRC Reno
Lines: 23


I am trying to use Hypercard as the front end for some math intensive
calculations. I believe using XFCNs would be the way to go. I have 
read the Claris documentation for creating XFCNs and implimented their
simple Flash in Think C. But I still have questions on ways to get
large data arrays in and out of XFCNs using Think C.

Since the data coming in is in a big string format, how do I convert each
item to floats or doubles? And, in reverse, after I have created an array
in the XFCN, how do I convert it to get it into the returnValue string?

Is there a book that convers advanced XCMD and XFCN programming in 
Think C? I heard that Bond's XCMDs for Hypercard is a good book, but
WaldenSoftware here can't find it on their list... How do you get that
book?

Email or post as appropriate. thanks for the help...


Kevin 
Kevin Brewer
kevinb@wheeler.wrc.unr.edu
  "When water chokes you, what are you to drink to wash it down?" -Aristotle