[#BloombergLP-bdls-FilesystemUtil-unmap]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdls.adoc[bdls]::xref:BloombergLP/bdls/FilesystemUtil.adoc[FilesystemUtil]::unmap
:relfileprefix: ../../../
:mrdocs:

Unmap the memory mapping with the specified base `address` and specified `size`. Return 0 on success, and a non‐zero value otherwise. The behavior is undefined unless this area with `address` and `size` was previously mapped with a `map` call.

== Synopsis

Declared in `<bdls_filesystemutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
unmap(
    void* address,
    std::size_t size);
----


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