[#BloombergLP-bdlsb-FixedMemOutStreamBuf-setbuf]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/FixedMemOutStreamBuf.adoc[FixedMemOutStreamBuf]::setbuf
:relfileprefix: ../../../
:mrdocs:

Reinitialize this stream buffer with a new character buffer.

== Synopsis

Declared in `<bdlsb_fixedmemoutstreambuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
xref:BloombergLP/bdlsb/FixedMemOutStreamBuf.adoc[FixedMemOutStreamBuf]*
setbuf(
    char_type* buffer,
    std::streamsize length) override;
----

== Description

Reinitialize this stream buffer to use the specified character `buffer` having the specified `length`. Return the address of this modifiable stream buffer. The behavior is undefined unless `length == 0` or `length > 0 && buffer != 0`. Upon re‐initialization for use of the new buffer, the length and next output location are reset to zero. Note that `buffer` is held but not owned.

== Return Value

address of this modifiable stream buffer

== Parameters

[cols="1,4"]
|===
| Name| Description
| *buffer*
| character buffer to use for output; held but not owned
| *length*
| size of `buffer` in characters
|===


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