Proposal: New Eq and Ord instances for Double and Float
Colin Paul Adams
colin at colina.demon.co.uk
Mon Sep 26 17:00:20 CEST 2011
Daniel> Same. I'd still hate the instances, but my practical
Daniel> concerns would be mostly covered by it.
Daniel> On Mon, Sep 26, 2011 at 10:14 AM, Edward Kmett <ekmett at gmail.com> wrote:
A proposal that made signalling NaN the default is something I could get behind.
But how would you implement it without significant overhead?
A quick google for signalling NaNs seems to suggest that on the x86
architecture, you have to set a flag to raise an exception when
encountering signalling NaNs. Otherwise they are just treated as quiet
But you have to create the signalling NaNs manually. They are not
created as a result of arithmetic operations.
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