[#BloombergLP-bdlb-BitStringUtil-insert1]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/BitStringUtil.adoc[BitStringUtil]::insert1
:relfileprefix: ../../../
:mrdocs:

Insert the specified `numBits` 1 bits into the specified `bitString` having the specified `initialLength` beginning at the specified `dstIndex`. Bits at or above `dstIndex` are shifted up by `numBits` index positions and the length of `bitString` is increased by `numBits`. The behavior is undefined unless `dstIndex <= initialLength` and `bitString` has a capacity of at least `initialLength + numBits`.

== Synopsis

Declared in `<bdlb_bitstringutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
insert1(
    uint64_t* bitString,
    std::size_t initialLength,
    std::size_t dstIndex,
    std::size_t numBits);
----


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