[#BloombergLP-bdlb-BitUtil-numLeadingUnsetBits-0b]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/BitUtil.adoc[BitUtil]::numLeadingUnsetBits
:relfileprefix: ../../../
:mrdocs:

Same as the `unsigned int` overload.

== Synopsis

Declared in `<bdlb_bitutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
numLeadingUnsetBits(unsigned long long value);
----

== Return Value

number of consecutive leading 0 bits in `value`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *value*
| value whose leading unset bits are counted
|===


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