Form is really slow and fast for me. What could this mean?

[Richard Fateman]

It is not necessary to have two .sorts in there.
I took out the first one, and it was just as fast.
Why should this help?

I tried this:

Symbols x,y,z;
Local q=(1+x+y+z)^20*(1+(1+z+x+y)^20)-(1+x+z+y)^20*(1+(1+z+x+y)^20);
Print;
.end

and it took about twice as long as the longest time.
(190 seconds)

I also tried
Local q=(1+x+y+z)^40
   and that takes about .98 seconds
Local q=(1+x+y+z)^40- (1+x+z+y)^40
   and that takes about 1.7 seconds.

What is going on?



Pearu Peterson wrote:

> Hi,
> 
> On Thu, 28 Mar 2002, Richard Fateman wrote:
> 
> 
>>C:\form>form sample3.frm
>>form sample3.frm
>>FORM by J.Vermaseren,version 3.0(Jan 28 2001) Run at: Thu Mar 28 
>>10:26:41 2002
>>     Symbols x,y,z;
>>     Local q=(1+x+y+z)^20;
>>     Local q1=q+1;
>>     Local res=q*q1;
>>     .end
>>.....
>>
> 
> Note that using .sort makes the above example approx. 4 times faster:
> 
> Symbols x,y,z;
> Local q=(1+x+y+z)^20;
> .sort
> Local q1=1+q;
> .sort
> Local res=q1*q;
> .end
> 
> Regards,
> 	Pearu
> 
>