On Wed, Jan 15, 2025 at 5:34 PM John Maddock via Boost < boost@lists.boost.org> wrote:
The review of the proposed Decimal Number library by Matt Borland and Chris Kormanyos begins today and runs until 22nd Jan.
You will find documentation here: https://cppalliance.org/decimal/decimal.html
And the code repository is here: https://github.com/cppalliance/decimal/
Boost.Decimal is an implementation of IEEE 754 https://standards.ieee.org/ieee/754/6210/ and ISO/IEC DTR 24733 https://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2849.pdf Decimal Floating Point numbers. The library is header-only, has no dependencies, and requires C++14.
Thanks to Matt & Chris for submitting your library for review. From glancing at the docs it looks great. However, I got a very basic question: What are the actual applications for decimal floating points? Where are they used or where would potential users want to use them? Why wouldn't one just use fixed-point arithmetic when the binary floating points don't provide the proper rounding behaviour?