feedc0de/mp-units
1
0
Fork 0
forked from mpusz/mp-units
Code Pull Requests Activity

Compilation Errors chapter added to FAQ

Browse Source
This commit is contained in:
Mateusz Pusz
2020-05-09 13:12:35 +02:00
parent 90fddb925d
commit 257d86185a
1 changed files with 20 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
docs/faq.rst
View File

@@ -76,3 +76,22 @@ to obey the rules and be consistent with ISO specifications.
physical quantities and units of measurement, formulas involving them, and their
corresponding units, in scientific and educational documents for worldwide use.
Read more on `Wikipedia <ISO/IEC 80000 https://en.wikipedia.org/wiki/ISO/IEC_80000>`_.
Compilation Errors
------------------
error: reference to ‘time’ is ambiguous
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Unfortunately, if `using-directives <https://en.cppreference.com/w/cpp/language/namespace#Using-directives>`_
(i.e. :expr:`using namespace units::physical::si`) are being used, `units::physical::si::time` will
collide with C `time <https://en.cppreference.com/w/c/chrono/time>`_ function. In such a case the library's
`time` function needs to be prefixed with at least one (or all) namespace names.
error: template argument 1 is invalid
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Again, usage of :expr:`using namespace units`
`using-directive <https://en.cppreference.com/w/cpp/language/namespace#Using-directives>`_ may result in
the collision between `units::exp` class template and C `exp <https://en.cppreference.com/w/c/numeric/math/exp>`_
function. In such a case the library's `exp` class template needs to be prefixed with `units` namespace name.