---
layout: stdlib-reference
---

# WaveMultiPrefixCountBits

## Description





## Signature 

<pre>
<span class="code_keyword">uint</span> <a href="wavemultiprefixcountbits-049fk.html">WaveMultiPrefixCountBits</a>(
    <span class="code_keyword">bool</span> <a href="wavemultiprefixcountbits-049fk.html#decl-value" class="code_param">value</a>,
    <a href="../types/vector/index.html" class="code_type">vector</a>&lt;<span class="code_keyword">uint</span>, 4&gt; <a href="wavemultiprefixcountbits-049fk.html#decl-mask" class="code_param">mask</a>);

</pre>

## Parameters

####  <a id="decl-value"></a>value  : bool
####  <a id="decl-mask"></a>mask  : [vector](../types/vector/index.html)\<uint, 4\>

## Availability and Requirements

Defined for the following targets:

#### hlsl
Available in all stages.

#### cuda
Available in all stages.