[#BloombergLP-bdlde-HexDecoder-convert-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlde.adoc[bdlde]::xref:BloombergLP/bdlde/HexDecoder.adoc[HexDecoder]::convert
:relfileprefix: ../../../
:mrdocs:

Decode hexadecimal input characters into binary output.

== Synopsis

Declared in `<bdlde_hexdecoder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class OUTPUT_ITERATOR,
    class INPUT_ITERATOR>
int
convert(
    OUTPUT_ITERATOR out,
    INPUT_ITERATOR begin,
    INPUT_ITERATOR end);
----

== Description

Append pending output (if any) addressed by the specified `out`, then consume and decode input from the specified `begin` up to but not including the specified `end`. Return 0 on success and a negative value otherwise. Note that calling this method after `endConvert` has been invoked without an intervening `reset` call will place this instance in an error state, and return an error status.

== Return Value

0 on success, and a negative value otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *out*
| output iterator for decoded bytes
| *begin*
| beginning of the input range
| *end*
| end of the input range (exclusive)
|===


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