[#BloombergLP-bdlde-Crc64-2constructor-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlde.adoc[bdlde]::xref:BloombergLP/bdlde/Crc64.adoc[Crc64]::Crc64
:relfileprefix: ../../../
:mrdocs:

Construct a checksum corresponding to the specified `data` having the specified `length` (in bytes). Note that if `data` is 0, then `length` also must be 0.

== Synopsis

Declared in `<bdlde_crc64.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
Crc64(
    void const* data,
    std::size_t length);
----


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