[#bsl-operator_ns-0a]
= xref:bsl.adoc[bsl]::operator""_ns
:relfileprefix: ../
:mrdocs:

Create a `bsl::chrono::duration` object having the `bsl::nano` duration period and initialized with the specified `ns` number of nanoseconds.

== Synopsis

Declared in `<bslstl_chrono.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
std::chrono::nanoseconds
operator""_ns(unsigned long long ns);
----


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