---
layout: stdlib-reference
---

# bit\_cast

## Description

Bit cast between types. <span class='code'><a href="bit_cast.html#typeparam-T" class="code_type">T</a></span> and <span class='code'><a href="bit_cast.html#typeparam-U" class="code_type">U</a></span> must have the same size.
They can be any scalar, vector, matrix, struct or array types.




## Signature 

<pre>
<a href="bit_cast.html#typeparam-T" class="code_type">T</a> <a href="bit_cast.html">bit_cast</a>&lt;<a href="bit_cast.html#typeparam-T" class="code_type">T</a>, <a href="bit_cast.html#typeparam-U" class="code_type">U</a>&gt;(<a href="bit_cast.html#typeparam-U" class="code_type">U</a> <a href="bit_cast.html#decl-value" class="code_param">value</a>);

</pre>

## Generic Parameters

####  <a id="typeparam-T"></a>T
####  <a id="typeparam-U"></a>U

## Parameters

####  <a id="decl-value"></a>value  : [U](bit_cast.html#typeparam-U)