64 bit LC

Jerry Jensen jerry at jhjensen.com
Sat Jul 21 04:39:41 CEST 2018


Just whip out your HP-35. It gets right answers!
.Jerry

> On Jul 20, 2018, at 6:32 PM, Bob Sneidar via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Wouldn't it be great if we could forgo the speed in lieu of accuracy? I mean, how could you develop an accounting application you could trust with this caveat?
> 
> Bob S
> 
> 
>> On Jul 20, 2018, at 17:17 , Kay C Lan via use-livecode <use-livecode at lists.runrev.com> wrote:
>> 
>> Surprised that no one has replied to this so I'll just offer a bit of
>> advice.  Whilst on the surface your assumption is correct, 64bit will
>> allow more accuracy than 32 bit, what you need to be aware of is the
>> same gotchas still apply to 64 bit LC as 32 bit LC.  Try this in the
>> msg box:
>> 
>> put 283.67-150.00-133.67
>> 
>> you should get 0. Now try this in the msg box:
>> 
>> put 283.67-150.00-133.67=0
>> 
>> You will get 'false' when you know you wanted true;  whether in 32bit
>> or 64 bit LC (Python, JBScript and some other languages) in some cases
>> you don't get the answer you know is correct.





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