---
title: "ClikaRT::ops::silu"
sidebar_label: "silu"
description: "Sigmoid linear unit (swish). \\[ \\mathrm{silu}(x) = x\\,\\sigma(x) = \\frac{x}{1 + e^{-x}} \\] ClikaRT::Error when the input's dtype is not served for this operation (the machine-readable reason rides code…"
---

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<span class="api-kind api-kind--function">function</span>

## silu() {#silu}

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[`Tensor`](../Tensor.md) **`silu`**([`Tensor`](../Tensor.md) `input`)

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Sigmoid linear unit (swish).

$$
\mathrm{silu}(x) = x\,\sigma(x) = \frac{x}{1 + e^{-x}}
$$

**Throws**

- `ClikaRT::Error`: when the input's dtype is not served for this operation (the machine-readable reason rides `code_name()`).

**Returns:** a new tensor, same shape and dtype as `input`.

```cpp
auto y = ClikaRT::ops::silu(x);
```

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Declared in `ClikaRT/compute/ops.h`, line 1018

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