× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  • Subject: RE: [Re: RPGILE V4.3 Gotcha]
  • From: Buck Calabro <mcalabro@xxxxxxxxxxxx>
  • Date: Fri, 8 Oct 1999 10:30:51 -0400

> >After 5 or 6 languages, I still usually check to make sure 
>they are doing it the same way.  And so far I haven't run 
>across any problems, not even with the MULT statement 
>in RPG.

Actually, RPG was always different from other languages because of the fixed
size of the numbers.  We never much thought about it because MULT and DIV
cannot produce intermediate results.  I believe that EVAL works very much
the same as other languages.  Take this C code that I just tried on the 400:

#include <stdio.h>       
void main () {           
                         
short a;                 
short b;                 
long  c;                 
                         
a = 65100;               
b = 100;                 
c = a * b / 100;         
printf("result=%i\n", c);
                        
}                        

Although "natural" arithmetic tells you that the result should be 65100, the
result is actually -436.  I have no run-time error, nor do I have a
compile-time error warning me that I might lose precision.  I am certainly
not versed in too many languages, but it seems to me that any language
allowing expressions will exhibit similar behaviour.

Buck Calabro
+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---


As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow-Ups:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.