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From: Bruno Lalande (bruno.lalande_at_[hidden])
Date: 2008-06-07 06:43:19

> real_concept doesn't have NaN's as such (I realise you can initialise it
> with a NaN, but the idea is to model a type with a minimum set of
> requirements, and that means no NaN's). Use
> std::numeric_limits<T>::has_quiet_NaN to check if the type has a NaN before
> testing - there may be some obscure platforms with no NaN support for the
> builtin floating point types in any case, likewise when testing infinities.

OK I added this check to the tests, everything passes now. Just an
idea: shouldn't there be such a check directly in isnan() in order it
to just return false when has_quiet_NaN is false?

> I'll fix those docs.

OK, and I will update the docs in the sandbox to add the new
indeterminate_result_error soon.


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