[#BloombergLP-bdlb-BitStringUtil-copyRaw]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/BitStringUtil.adoc[BitStringUtil]::copyRaw
:relfileprefix: ../../../
:mrdocs:

Copy bits between bit strings that do not overlap adversely.

== Synopsis

Declared in `<bdlb_bitstringutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
copyRaw(
    uint64_t* dstBitString,
    std::size_t dstIndex,
    uint64_t const* srcBitString,
    std::size_t srcIndex,
    std::size_t numBits);
----

== Description

Copy to the specified `dstBitString`, beginning at the specified `dstIndex`, the specified `numBits` beginning at the specified `srcIndex` in the specified `srcBitString`. The behavior is undefined unless `dstBitString` has a capacity of at least `dstIndex + numBits`, `srcBitString` has a length of at least `srcIndex + numBits`, and the source and destination ranges either do not overlap, or the destination range is equal to the source range, or the start of the destination range is below the start of the source range.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *dstBitString*
| destination bit string
| *dstIndex*
| starting bit index in the destination
| *srcBitString*
| source bit string
| *srcIndex*
| starting bit index in the source
| *numBits*
| number of bits to copy
|===


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