[#BloombergLP-bdlb-BitStringUtil-assign0-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/BitStringUtil.adoc[BitStringUtil]::assign0
:relfileprefix: ../../../
:mrdocs:

Set the specified `numBits` beginning at the specified `index` in the specified `bitString` to `false`. The behavior is undefined unless `bitString` has a capacity of at least `index + numBits`.

== Synopsis

Declared in `<bdlb_bitstringutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
assign0(
    uint64_t* bitString,
    std::size_t index,
    std::size_t numBits);
----


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