34 lines
1 KiB
ReStructuredText
34 lines
1 KiB
ReStructuredText
|
|
xo-ratio documentation
|
|
======================
|
|
|
|
xo-ratio is a lightweight header-only library that provides a constexpr
|
|
fixed-size no-allocation ratio implementation.
|
|
|
|
Why ``ratio``?
|
|
|
|
1. ``ratio`` instances can be used as template arguments. [1]_
|
|
|
|
2. ``ratio`` operations (arithmetic, integer powers, string conversion, ...) are ``constexpr``, so can be done at compile time. [2]_
|
|
|
|
3. a ``ratio`` expression can occupy both compile-time and runtime roles. [3]_
|
|
|
|
.. [1] verified with gcc 13.2.0; clang 18 does not recognize ratio<T> as a structured type for some reason.
|
|
|
|
.. [2] Although allocation is permitted in constexpr code, it's subject to several restrictions.
|
|
it's not yet possible (as of c++23) to use ``std::string`` at compile time.
|
|
Using ``xo::flatstring`` instead.
|
|
|
|
.. [3] contrast with a solution relying on template arguments, which must then be compile-time-only.
|
|
|
|
.. toctree::
|
|
:maxdepth: 2
|
|
:caption: xo-ratio contents:
|
|
|
|
install
|
|
|
|
Indices and Tables
|
|
------------------
|
|
|
|
* :ref:`genindex`
|
|
* :ref:`search`
|