floating point verification using is?

grauzone none at example.net
Fri Dec 18 09:36:55 PST 2009

bearophile wrote:
> Steven Schveighoffer:
>> If I have 2 identical floating point values, how do I ensure they are  
>> binary equivalents of eachother?
> Try this inside std.math of Phobos2:
> bool isIdentical(real x, real y);
>> I thought 'a is b' would work, but it just morphs into a == b, which isn't  
>> helpful.  Why doesn't 'is' just do a bit compare for floating points?
> "is" is used to compare references.

No. If you use it with structs, the type's opEquals is not called. "is" 
is used for a lot of things.

I agree that is should do a bitwise comparison for floating points. That 
would be a nice fix for D2.

> Bye,
> bearophile

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