Haskell question

[Conal Elliott]

It's probably due to rounding.  If you use "^" instead of "**", defaulting
to integers, you'll get the triples you expected.  - Conal

-----Original Message-----
From: Scott [mailto:adric@wipcradio.cc]
Sent: Thursday, December 28, 2000 3:05 PM
To: Haskell-Cafe@haskell.org
Subject: Haskell question


Hello!
   I am reading Discrete Mathematics Using a computer by Hall and O'Donnell 
and in the introduction to hugs section, they give this example:
[[x,y] | x<-[1..50],y<-[1..50],z<-[1..50],x**2+y**2==z**2]
now I type it in and expect it to return a number of results, but it 
doesn't, it shows:
[[8.0,15.0,17.0],[14.0,48.0,50.0],[15.0,8.0,17.0],[15.0,20.0,25.0],[20.0,15.
0,25.0],[21.0,28.0,35.0],[27.0,36.0,45.0],[28.0,21.0,35.0],[30.0,40.0,50.0],
[36.0,27.0,45.0],[40.0,30.0,50.0],[48.0,14.0,50.0]]
My question is where is [3.0,4.0,5.0],[5.0,12.0,13.0]?
I have looked everywhere I could think of to see what I am doing wrong, but 
I have no idea.  Maybe a rounding error somewhere?
Thank you,
  Scott Anderson


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