Dennis- Wednesday, June 22, 2005, 1:47:25 PM, you wrote:
DB> John, DB> I actually had a complete matrix algebra package as an external for DB> Hypercard. I know how to use it, because I cut my teeth on APL. I DB> implemented my complex algorithms and state machines in it. The DB> coding was cumbersome, and it was difficult to debug and handle edge DB> conditions, sparse arrays, etc. And to top it all off, it only ran DB> 25% faster than the simple HyperCard stack even though it could DB> crunch numbers 10 times faster. However, I have to admit that it DB> spent a lot of time converting and passing arrays back and forth to DB> HyperCard. A native engine capability might make a big difference if DB> the internal representation could be typed by making sure you only DB> put all the same type numbers into the array, and if the indexes were DB> truly integers. The both matrix and element by element operations DB> could be mixed and we would have the best of both worlds. Couldn't you just recompile this as a runrev external? The GetArray() and SetArray() functions can work with the entire array at once, saving you from having to pass individual array elements. If you really need the speed you could have the external process the array in assembly language, stuffing the values into registers and having the CPU crunch them for you. -- -Mark Wieder [EMAIL PROTECTED] _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
