Re: Decimal Floating Point Library Beta

From: Virgilio Fornazin (virgiliofornazin_at_[hidden])
Date: 2024-05-13 15:59:41

This is a really needed library for native C++ big number math, with
better precision for money calculations, to avoid floating point pitfalls

I'll give it a try, nice job!

On Mon, May 13, 2024 at 10:44 AM Matt Borland via Boost <
boost_at_[hidden]> wrote:

> Hello,
>
> For the past year Chris Kormanyos and I have been working on a new library
> to implement IEEE 754 decimal floating point types. We are pleased to
> announce the library is now in beta, and can be found at:
> https://github.com/cppalliance/decimal, and the documentation is at:
> https://cppalliance.org/decimal/decimal.html
>
> First, what are Decimal Floating Point Numbers? They are floating point
> numbers where the significand is stored in base-10 (decimal) instead of
> base-2 (binary). This means that numbers can be represented exactly
> avoiding cases such as the famous 0.1 + 0.2 != 0.3:
> https://0.30000000000000004.com.
>
>
> The library provides types decimal32, decimal64, and decimal128 as
> specified in IEEE 754 and STL-like functionality. The library is
> header-only, has no dependencies, and only requires C++14. It provides most
> of the STL functionality that you are familiar with such as <cmath>,
> <cstdlib>, <charconv>, etc. We are proceeding as a beta right now rather
> than pursuing complete boost review as we are missing STL features such as
> C++17 special math, and believe we can continue to increase performance. We
> do intend to go through the review process at a later time.
>
> Please give the library a go, and let us know how we can make it better.
> We look forward to any and all feedback. If you use the Cpplang slack
> channel I am active (from the Central European Time zone) on both #boost
> and #boost-decimal.
>
> On a personal note as of today I have also moved from being employed
> half-time to full-time with the C++ Alliance. This affords me a greater
> opportunity to develop and maintain new and existing Boost libraries.
>
> Matt Borland
>
> —-
> C++ Alliance Staff Engineer
>
>
>
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