xo-unit: streamline unit spec + docs

This commit is contained in:
Roland Conybeare 2024-05-08 22:13:35 -04:00
commit 9f9d897dbf
5 changed files with 93 additions and 51 deletions

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@ -3,7 +3,7 @@
xo_doxygen_collect_deps()
xo_docdir_doxygen_config()
xo_docdir_sphinx_config(
index.rst examples.rst glossary.rst install.rst implementation.rst
index.rst examples.rst glossary.rst install.rst implementation.rst development.rst
quantity-reference.rst quantity-class.rst quantity-factoryfunctions.rst quantity-unitvars.rst
unit-reference.rst unit-concept.rst unit-quantities.rst basis-unit-reference.rst
basis-unit-class.rst basis-unit-constants.rst

18
docs/development.rst Normal file
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@ -0,0 +1,18 @@
.. _development:
Miscellaneous development notes for *xo-unit*.
How To...
=========
Add Basis Unit
--------------
To add a basis unit for an existing dimension:
#. add unit definition to the ``xo::qty::bu`` namespace in ``include/xo/unit/basis_unit.hpp``
#. add call to ``bu_store::bu_establish_abbrev()`` from ``bu_store::bu_store``.
#. add ``natural_unit`` definition to ``xo::qty::nu`` namespace in ``include/xo/unit/natural_unit.hpp``
#. add ``scaled_unit`` definition to ``xo::qty::u`` namespace in ``include/xo/unit/scaled_unit.hpp``.
#. add unit quantity to ``xo::qty::qty`` namespace in ``include/xo/unit/quantity.hpp``
#. add factory function to ``xo::qty::qty`` namespace in ``include/xo/unit/quantity.hpp``

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@ -15,7 +15,9 @@ Abstraction tower for *xo-unit* components.
| natural_unit |
+-----------------------+
| bpu |
+-----------------------+
+-----------+ |
| bu_store | |
+-----------+-----------+
| basis_unit |
+-----------------------+
| dimension |
@ -50,6 +52,12 @@ Abstraction tower for *xo-unit* components.
A power of a basis unit. Has a single dimension.
- bu_store:
Associates basis units with abbreviations.
For example ``bu::kilogram`` => ``"kg"``
- basis_unit: see :doc:`basis-unit-reference`.
A unit with a single dimension and scale.
@ -184,11 +192,15 @@ Worked example using :cpp:class:`xo::qty::quantity`
.. code-block:: cpp
:linenos:
namespace su = xo::qty::su;
namespace u = xo::qty::u;
// (123*7.55) ng.km.min^-2 ==> 2.57958e-10kg.m.s^-2
quantity qty3b = qty3.rescale_ext<su::kilogram * su::meter / (su::second * su::second)>();
constexpr auto newton = u::kilogram * u::meter / (u::second * u::second);
quantity<newton> qty3b = qty3;
// quantity qty3b = qty3.rescale_ext<newton>();
.. uml::
:caption: quantity 928.65 ng.km.min^-2

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@ -33,6 +33,7 @@ runtime (since we can't construct new c++ types at runtime).
install
examples
implementation
development
unit-quantities
quantity-reference
unit-reference

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@ -70,53 +70,64 @@ namespace xo {
* quantity<u:meter/u:second> velocity;
*/
constexpr auto picogram = detail::su_promote<std::int64_t>(nu::picogram);
constexpr auto nanogram = detail::su_promote<std::int64_t>(nu::nanogram);
constexpr auto microgram = detail::su_promote<std::int64_t>(nu::microgram);
constexpr auto milligram = detail::su_promote<std::int64_t>(nu::milligram);
constexpr auto gram = detail::su_promote<std::int64_t>(nu::gram);
constexpr auto kilogram = detail::su_promote<std::int64_t>(nu::kilogram);
constexpr auto tonne = detail::su_promote<std::int64_t>(nu::tonne);
constexpr auto kilotonne = detail::su_promote<std::int64_t>(nu::kilotonne);
constexpr auto megatonne = detail::su_promote<std::int64_t>(nu::megatonne);
constexpr auto gigatonne = detail::su_promote<std::int64_t>(nu::gigatonne);
constexpr auto
su_from_bu(const basis_unit & bu,
const power_ratio_type & power = power_ratio_type(1))
{
return detail::su_promote<std::int64_t>(natural_unit<std::int64_t>::from_bu(bu, power));
}
constexpr auto picometer = detail::su_promote<std::int64_t>(nu::picometer);
constexpr auto nanometer = detail::su_promote<std::int64_t>(nu::nanometer);
constexpr auto micrometer = detail::su_promote<std::int64_t>(nu::micrometer);
constexpr auto millimeter = detail::su_promote<std::int64_t>(nu::millimeter);
constexpr auto meter = detail::su_promote<std::int64_t>(nu::meter);
constexpr auto kilometer = detail::su_promote<std::int64_t>(nu::kilometer);
constexpr auto megameter = detail::su_promote<std::int64_t>(nu::megameter);
constexpr auto gigameter = detail::su_promote<std::int64_t>(nu::gigameter);
constexpr auto picogram = su_from_bu(detail::bu::picogram);
constexpr auto nanogram = su_from_bu(detail::bu::nanogram);
constexpr auto microgram = su_from_bu(detail::bu::microgram);
constexpr auto milligram = su_from_bu(detail::bu::milligram);
constexpr auto gram = su_from_bu(detail::bu::gram);
constexpr auto kilogram = su_from_bu(detail::bu::kilogram);
constexpr auto tonne = su_from_bu(detail::bu::tonne);
constexpr auto kilotonne = su_from_bu(detail::bu::kilotonne);
constexpr auto megatonne = su_from_bu(detail::bu::megatonne);
constexpr auto gigatonne = su_from_bu(detail::bu::gigatonne);
constexpr auto lightsecond = detail::su_promote<std::int64_t>(nu::lightsecond);
constexpr auto astronomicalunit = detail::su_promote<std::int64_t>(nu::astronomicalunit);
constexpr auto picometer = su_from_bu(detail::bu::picometer);
constexpr auto nanometer = su_from_bu(detail::bu::nanometer);
constexpr auto micrometer = su_from_bu(detail::bu::micrometer);
constexpr auto millimeter = su_from_bu(detail::bu::millimeter);
constexpr auto meter = su_from_bu(detail::bu::meter);
constexpr auto kilometer = su_from_bu(detail::bu::kilometer);
constexpr auto megameter = su_from_bu(detail::bu::megameter);
constexpr auto gigameter = su_from_bu(detail::bu::gigameter);
constexpr auto inch = detail::su_promote<std::int64_t>(nu::inch);
constexpr auto foot = detail::su_promote<std::int64_t>(nu::foot);
constexpr auto yard = detail::su_promote<std::int64_t>(nu::yard);
constexpr auto mile = detail::su_promote<std::int64_t>(nu::mile);
constexpr auto lightsecond = su_from_bu(detail::bu::lightsecond);
constexpr auto astronomicalunit = su_from_bu(detail::bu::astronomicalunit);
constexpr auto picosecond = detail::su_promote<std::int64_t>(nu::picosecond);
constexpr auto nanosecond = detail::su_promote<std::int64_t>(nu::nanosecond);
constexpr auto microsecond = detail::su_promote<std::int64_t>(nu::microsecond);
constexpr auto millisecond = detail::su_promote<std::int64_t>(nu::millisecond);
constexpr auto second = detail::su_promote<std::int64_t>(nu::second);
constexpr auto minute = detail::su_promote<std::int64_t>(nu::minute);
constexpr auto hour = detail::su_promote<std::int64_t>(nu::hour);
constexpr auto day = detail::su_promote<std::int64_t>(nu::day);
constexpr auto week = detail::su_promote<std::int64_t>(nu::week);
constexpr auto month = detail::su_promote<std::int64_t>(nu::month);
constexpr auto year = detail::su_promote<std::int64_t>(nu::year);
constexpr auto year250 = detail::su_promote<std::int64_t>(nu::year250);
constexpr auto year360 = detail::su_promote<std::int64_t>(nu::year360);
constexpr auto year365 = detail::su_promote<std::int64_t>(nu::year365);
constexpr auto inch = su_from_bu(detail::bu::inch);
constexpr auto foot = su_from_bu(detail::bu::foot);
constexpr auto yard = su_from_bu(detail::bu::yard);
constexpr auto mile = su_from_bu(detail::bu::mile);
constexpr auto volatility_30d = detail::su_promote<std::int64_t>(nu::volatility_30d);
constexpr auto volatility_250d = detail::su_promote<std::int64_t>(nu::volatility_250d);
constexpr auto volatility_360d = detail::su_promote<std::int64_t>(nu::volatility_360d);
constexpr auto volatility_365d = detail::su_promote<std::int64_t>(nu::volatility_365d);
constexpr auto picosecond = su_from_bu(detail::bu::picosecond);
constexpr auto nanosecond = su_from_bu(detail::bu::nanosecond);
constexpr auto microsecond = su_from_bu(detail::bu::microsecond);
constexpr auto millisecond = su_from_bu(detail::bu::millisecond);
constexpr auto second = su_from_bu(detail::bu::second);
constexpr auto minute = su_from_bu(detail::bu::minute);
constexpr auto hour = su_from_bu(detail::bu::hour);
constexpr auto day = su_from_bu(detail::bu::day);
constexpr auto week = su_from_bu(detail::bu::week);
constexpr auto month = su_from_bu(detail::bu::month);
constexpr auto year = su_from_bu(detail::bu::year);
constexpr auto year250 = su_from_bu(detail::bu::year250);
constexpr auto year360 = su_from_bu(detail::bu::year360);
constexpr auto year365 = su_from_bu(detail::bu::year365);
constexpr auto volatility_30d = su_from_bu(detail::bu::month,
power_ratio_type(-1,2));
constexpr auto volatility_250d = su_from_bu(detail::bu::year250,
power_ratio_type(-1,2));
constexpr auto volatility_360d = su_from_bu(detail::bu::year360,
power_ratio_type(-1,2));
constexpr auto volatility_365d = su_from_bu(detail::bu::year365,
power_ratio_type(-1,2));
}
namespace detail {