Re: [Haskell-cafe] round function

12 Feb 2006


      Ok, i have got it working.

Thanks for the posts
...
From: "J. Garrett Morris" 
To: sylvan@student.chalmers.se
CC: Chatzianastassiou Achilleas , 
haskell-cafe@haskell.org
Subject: Re: [Haskell-cafe] round function
Date: Sun, 12 Feb 2006 18:46:47 -0500
Ah, okay.  I misinterpreted.. I was thinking of round, just moving the
other direction from the decimal point.
/g
On 2/12/06, Sebastian Sylvan  wrote:
...
On 2/13/06, J. Garrett Morris  wrote:
...
I think the function you're looking for is:
myRound n places = round (n / fromIntegral factor) * factor
    where factor = 10 ^ (places - 1)
This gives:
*Main> myRound 123123.123 2
123120
Whereas my (revised) version gives
*Main> myround 123123.123 2
120000.0
I may be wrong, but I think it's this latter result he's looking for(?).
/S
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Sebastian Sylvan
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