[#BloombergLP-bdlsb-FixedMemInput-sgetn]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/FixedMemInput.adoc[FixedMemInput]::sgetn
:relfileprefix: ../../../
:mrdocs:

Read the specified `length` characters to the specified `destination`&period; Return the number of characters successfully read from this buffer, which is either equal to the `length` parameter or equal to the distance from the current read position to the end of the input buffer, whichever is smaller, and move the read cursor position by this amount&period; The behavior is undefined unless &apos;0 &lt;&equals; length&apos;&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::streamsize
sgetn(
    xref:BloombergLP/bdlsb/FixedMemInput/char_type.adoc[char&lowbar;type]* destination,
    std::streamsize length);
----


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