Roland Conybeare
d1fa15f248
git-subtree-dir: xo-unit git-subtree-mainline:e9ee6992cagit-subtree-split:b531e382c2
98 lines
2.9 KiB
ReStructuredText
98 lines
2.9 KiB
ReStructuredText
.. _quantity-unitvars:
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Quantity Unit Variables
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=======================
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Built-in unit quantities
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Context
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-------
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.. ditaa::
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:--scale: 0.85
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+----------------+---------------+
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|cBLU quantity | xquantity |
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+----------------+---------------+
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| scaled_unit |
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+--------------------------------+
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| natural_unit |
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+--------------------------------+
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| bpu |
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+----------------+ |
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| bu_store | |
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+----------------+---------------+
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| basis_unit |
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+--------------------------------+
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| dimension |
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+--------------------------------+
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Introduction
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------------
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.. code-block:: cpp
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#include <xo/unit/quantity.hpp>
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The ``xo::qty::qty`` namespace contains unit quantities in each dimension.
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Can use these to assemble unit quantities with compound dimensions
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.. code-block:: cpp
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:linenos:
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:emphasize-lines: 6
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#include "xo/unit/quantity.hpp"
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namespace q = xo::qty::qty;
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auto q1 = (q::kilometers(150.0) / q::hours(0.5));
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constexpr auto u_mps = q:meter / q:second;
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auto q2 = with_units_from(q1, u_mps);
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Mass
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----
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.. doxygenvariable:: xo::qty::qty::picogram
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.. doxygenvariable:: xo::qty::qty::nanogram
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.. doxygenvariable:: xo::qty::qty::microgram
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.. doxygenvariable:: xo::qty::qty::milligram
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.. doxygenvariable:: xo::qty::qty::gram
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.. doxygenvariable:: xo::qty::qty::kilogram
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.. doxygenvariable:: xo::qty::qty::tonne
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.. doxygenvariable:: xo::qty::qty::kilotonne
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.. doxygenvariable:: xo::qty::qty::megatonne
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.. doxygenvariable:: xo::qty::qty::gigatonne
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Distance
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--------
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.. doxygenvariable:: xo::qty::qty::picometer
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.. doxygenvariable:: xo::qty::qty::nanometer
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.. doxygenvariable:: xo::qty::qty::micrometer
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.. doxygenvariable:: xo::qty::qty::millimeter
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.. doxygenvariable:: xo::qty::qty::meter
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.. doxygenvariable:: xo::qty::qty::kilometer
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.. doxygenvariable:: xo::qty::qty::megameter
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.. doxygenvariable:: xo::qty::qty::gigameter
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.. doxygenvariable:: xo::qty::qty::lightsecond
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.. doxygenvariable:: xo::qty::qty::astronomicalunit
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.. doxygenvariable:: xo::qty::qty::inch
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.. doxygenvariable:: xo::qty::qty::foot
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.. doxygenvariable:: xo::qty::qty::yard
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.. doxygenvariable:: xo::qty::qty::mile
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Time
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----
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.. doxygenvariable:: xo::qty::qty::picosecond
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.. doxygenvariable:: xo::qty::qty::nanosecond
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.. doxygenvariable:: xo::qty::qty::microsecond
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.. doxygenvariable:: xo::qty::qty::millisecond
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.. doxygenvariable:: xo::qty::qty::second
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.. doxygenvariable:: xo::qty::qty::minute
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.. doxygenvariable:: xo::qty::qty::hour
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.. doxygenvariable:: xo::qty::qty::day
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.. doxygenvariable:: xo::qty::qty::week
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.. doxygenvariable:: xo::qty::qty::month
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.. doxygenvariable:: xo::qty::qty::year
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.. doxygenvariable:: xo::qty::qty::year250
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.. doxygenvariable:: xo::qty::qty::year360
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.. doxygenvariable:: xo::qty::qty::year365
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