Roland Conybeare
d1fa15f248
git-subtree-dir: xo-unit git-subtree-mainline:e9ee6992cagit-subtree-split:b531e382c2
66 lines
1.4 KiB
ReStructuredText
66 lines
1.4 KiB
ReStructuredText
.. _dimension:
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Native Dimension
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================
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An abstract dimension; distinct native dimensions are orthogonal
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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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| 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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|cBLU dimension |
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+--------------------------------+
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Introduction
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------------
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Identifies an abstract dimension, for example *mass* or *time*.
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.. code-block:: cpp
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#include <xo/unit/dimension.hpp>
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For example can use this enum to index basis members of a :doc:`scaled_unit<scaled-unit-class>` instance:
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.. code-block:: cpp
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:emphasize-lines: 7-8
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#include <xo/unit/quantity.hpp>
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using namespace xo::qty;
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auto x = q::kilometers(100) / q::hours(1);
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auto bpu1 = x.lookup_dim(dim::time);
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auto bpu2 = x.lookup_dim(dim::distance);
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Enum
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----
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.. doxygenenum:: xo::qty::dimension
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Constants
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---------
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.. doxygenvariable:: xo::qty::n_dim
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Functions
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---------
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.. doxygenfunction:: xo::qty::dim2str
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