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Re: new modules 'isnan', 'isnanf', 'isnand'

From: Ben Pfaff
Subject: Re: new modules 'isnan', 'isnanf', 'isnand'
Date: Tue, 08 Jul 2008 03:56:10 -0700
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux)

Simon Josefsson <address@hidden> writes:

> Ben Pfaff <address@hidden> writes:
>> +Gnulib module: isnan
>>  Portability problems fixed by Gnulib:
>>  @itemize
>> address@hidden
>> +This macro is missing on some platforms and does not always yield
>> +correct results on others.
>>  @end itemize
> Hi Ben!  A minor comment: If you know which platforms isnan is missing
> on, and which platforms it results in incorrect results, that may be
> useful information to add.  Also, knowing which inputs result in
> incorrect output may also be useful.  If it is complicated to explain,
> perhaps the self-test or m4 test is a better place for such discussions,
> but I could not find any similar change for that area in your patch (but
> I could have missed it).

Thanks for keeping me honest.  I'll definitely improve this
before I push anything.  I don't have a good list of platforms on
which isnan is missing, because Bruno's list by platform only
covers functions, but I can do better than what is given here.  I
can come up with some platforms that have incorrect results by
merging the docs for isnanf and isnanl.
Ben Pfaff 

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