Eliminate the baroque floating-point operators a la !<>=

[div0]

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Denis Koroskin wrote:
> On Sun, 17 May 2009 21:14:46 +0400, Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote:
> 
>> Hello,
>>
>>
>> I think the floating-point operators:
>>
>>    a !<>= b
>>    a !<> b
>>    a <> b
>>    a <>= b
>>    a !> b
>>    a !>= b
>>    a !< b
>>    a !<= b
>>
>> are useless. A simple peephole optimization in the compiler can  
>> automatically rewrite NaN test followed by regular operations into the  
>> operations above, for example:
>>
>> isNaN(a) || isNan(b) || a >= b
>>
>> is the same as
>>
>> a !< b
>>
>> This is in keeping with what the compiler does when seeing code like:
>>
>> a = x / y;
>> b = x % y;
>>
>> There's a peephole optimization that groups the / and the % together  
>> into an assembler operation that does both. If this is the way to go, we  
>> better be congruent and use explicit isNaN tests (that are then  
>> optimized) instead of defining eight extra operators.
>>
>>
>> Andrei
> 
> Does anyone other than Don uses them at all?
> I don't care if they are removed from D.

+vote
Me too. isNaN is a lot easier to read.

- --
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