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layout: stdlib-reference
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# IDifferentiable\.dmul

## Description

Multiplies a scalar value of a built-in real type with a differential value and returns the result.




## Signature 

<pre>
<span class='code_keyword'>static</span> <a href="index.html" class="code_type">IDifferentiable</a>.<span class="code_keyword">This</span>.Differential <a href="index.html" class="code_type">IDifferentiable</a>.<a href="dmul.html">dmul</a>&lt;<a href="dmul.html#typeparam-T" class="code_type">T</a>&gt;(
    <a href="dmul.html#typeparam-T" class="code_type">T</a> <a href="dmul.html#decl-SLANG_anonymous_2" class="code_param">SLANG_anonymous_2</a>,
    <a href="index.html" class="code_type">IDifferentiable</a>.<span class="code_keyword">This</span>.Differential <a href="dmul.html#decl-SLANG_anonymous_3" class="code_param">SLANG_anonymous_3</a>)
    <span class='code_keyword'>where</span> <a href="dmul.html#typeparam-T" class="code_type">T</a> : __BuiltinRealType;

</pre>

## Generic Parameters

####  <a id="typeparam-T"></a>T: \_\_BuiltinRealType

## Parameters

####  <a id="decl-SLANG_anonymous_2"></a>SLANG\_anonymous\_2  : [T](dmul.html#typeparam-T)
####  <a id="decl-SLANG_anonymous_3"></a>SLANG\_anonymous\_3  : [IDifferentiable](index.html)\.This\.Differential
Multiplies a scalar value of a built-in real type with a differential value and returns the result.