divRem by `-' performance

[Albert Y. C. Lai]

On 12-10-18 03:10 PM, Serge D. Mechveliani wrote:
> But in this example of  qRem  the time is almost so as if  quot  was
> not computed.
> Probably, the coefficient of this expense is small.
>
> On the other hand, an extra memory occupation also often causes slowing
> down of all the environment program, because this occupation approaches
> garbage collection.

Use "./Main +RTS -s -RTS" to find out how hard the garbage collector has 
to work. Use "./Main +RTS -M64m -RTS" to find out how much memory is not 
enough. We are speaking of "snd (qRem n 5)", of course.

("64MB ought to be enough for everybody."? :) )