[Bug 2230617] Review Request: half - A C++ half-precision floating point type

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https://bugzilla.redhat.com/show_bug.cgi?id=2230617

Jonathan Wakely <jwakely@xxxxxxxxxx> changed:

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--- Comment #7 from Jonathan Wakely <jwakely@xxxxxxxxxx> ---
(In reply to Tom Rix from comment #0)
> Spec URL: https://trix.fedorapeople.org/half.spec
> SRPM URL: https://trix.fedorapeople.org/half-2.2.0-1.fc38.src.rpm
> FAS: trix
> 
> This is a C++ header-only library to provide an IEEE-754 conformant
> half-precision floating point type along with corresponding arithmetic
> operators, type conversions and common mathematical functions.

GCC 13 already provides both std::float16_t and std::bfloat16_t as built-in
types, with support in <cmath> (and <limits>, and <format>).

Does this library take advantage of that if available?


> It aims
> for both efficiency and ease of use, trying to accurately mimic the
> behaviour of the builtin floating point types at the best performance
> possible. It automatically uses and provides C++11 features when
> possible, but stays completely C++98-compatible when neccessary.

This suggests it doesn't.


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