Re: Decimal: Formal review begins

From: Matt Borland (matt_at_[hidden])
Date: 2025-01-21 18:24:25

On Tuesday, January 21st, 2025 at 12:50 PM, Peter Dimov via Boost <boost_at_[hidden]> wrote:

> 

> 

> > I'm not quite sure whether zero needs to be a special case here. There's special
> 

> > case logic in operator< for it, but I'm not positive it's needed.
> 

> 

> Specifically,
> 

> https://github.com/cppalliance/decimal/blob/069c26a111b33123e6ce5c34b4bb007762b32155/include/boost/decimal/decimal64_fast.hpp#L597
> 

> here it looks like -0.0 is considered less than +0.0, but is this correct? -0 and +0 are equal.
> 

> 

I don't remember why the distinction was made, but I just looked through IEEE 754-2019 and there is not a difference in the Decimal case. Funny enough I asked Claude 3.5 Sonnet, and it linked me to my own documentation.

Matt