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-rw-r--r--doc/src/index.rst12
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/src/index.rst b/doc/src/index.rst
index 60c6fdb..6c341c2 100644
--- a/doc/src/index.rst
+++ b/doc/src/index.rst
@@ -272,6 +272,18 @@ Stream I/O Operators
.. versionadded:: 1.0.0
+Arithmetic Operators
+~~~~~~~~~~~~~~~~~~~~
+
+.. cpp:function:: template<typename BaseType, \
+ typename TagType, \
+ auto DerivationClause> \
+ constexpr new_type<BaseType, TagType, DerivationClause> operator+(new_type<BaseType, TagType, DerivationClause> const & lhs, new_type<BaseType, TagType, DerivationClause> const & rhs)
+
+ **noexcept specification:** This input operator shall be noexcept iff. :cpp:type:`new_type<BaseType, TagType, DerivationClause>::base_type` is nothrow addable as well as nothrow copy-constructible.
+
+ **enablement:** This operator shall be available iff. a) :cpp:type:`new_type<BaseType, TagType, DerivationClause>::base_type` is addable using the operator :literal:`+` and b) :cpp:type:`DerivationClause` includes :cpp:var:`Arithmetic`.
+
Header :literal:`<newtype/derivable.hpp>`
=========================================