[#BloombergLP-bdlsb-FixedMemInput-in_avail]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/FixedMemInput.adoc[FixedMemInput]::in&lowbar;avail
:relfileprefix: ../../../
:mrdocs:

Return the number of characters available from the current read position in this stream buffer&period;

== Synopsis

Declared in `&lt;bdlsb&lowbar;fixedmeminput&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::streamsize
in&lowbar;avail();
----


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