Re[2]: Date * 10000.01

     The AS/400 compilers and system cannot make up for bad code.  What's 
     really happening here is a combination of several things.  First the 
     machine will take the numbers into floating point so it can make an 
     accurate arithmetic calculation.  Then it will try to fit the result 
     into the field provided.  The reason this works is the truncation.  In 
     order to properly handle the situation the processor has to work 
     between 50 and 150 times harder than three memory moves!  The AS/400 
     does fine, but it cannot protect users from complete stupidity in 
     coding.
     
     If anyone really wants to see what's happening here use the 
     Performance Explorer on a couple of test programs and watch the 
     difference in execution and elapsed times.
     
     Just my opinion
     
     Jim Oberholtzer


______________________________ Reply Separator _________________________________
Subject: Re: Date * 10000.01 
Author:  <MIDRANGE-L@midrange.com> at Tcpgate
Date:    11/18/98 3:24 PM


> I strongly agree with Hans.  We did specific performance testing on this
> function in RPG III, and found it to be 48 times more expensive from a CPU 
> perspective.
>
> Al
     
Does this mean that 400 has some extremely weak mathematical processing, or 
is it just the compiler that is badly written?
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