[#bsl-bitset-2constructor-08b]
= xref:bsl.adoc[bsl]::xref:bsl/bitset.adoc[bitset]::bitset
:relfileprefix: ../../
:mrdocs:

Create a bitset with its first `M` bit positions correspond to bit values in the specified `val`. `M` is the smaller of the parameterized `N` and `8 * sizeof(unsigned long long)`. If `M < N`, the remaining bit positions are initialized to 0.

== Synopsis

Declared in `<bslstl_bitset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
bitset(unsigned long long val) noexcept;
----


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