V3 PATCH: numeric_limits<> support, fix PR/3865

[Ulrich Drepper]

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Richard Henderson wrote:
> On Mon, Sep 02, 2002 at 02:59:18PM -0700, Ulrich Drepper wrote:
> 
>>__builtin_nan ("") could be either __builtin_snan ("")
>>or __builtin_qnan ("").
> 
> 
> Err, no.  Within the compiler we have to pick one.  IMO 
> __builtin_nan("") should always be the c99 NAN, ie quiet.

If this is OK with the common practice on all the platforms, fine.  I 
just wanted to be careful and more flexible.

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