---
title: "ClikaRT::nn::Hardsigmoid"
sidebar_label: "Hardsigmoid"
description: "Piecewise-linear sigmoid approximation: clamp(input / 6 + 1 / 2, 0, 1)."
---

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**Header:** `ClikaRT/nn/generated/activation.h`  
**Inherits:** [`ClikaRT::nn::Module`](./Module.md)

Piecewise-linear sigmoid approximation: clamp(input / 6 + 1 / 2, 0, 1). The module form of [`ClikaRT::ops::hardsigmoid`](../ops/hardsigmoid.md#hardsigmoid), which documents the full contract (shapes, dtypes, errors); construct once, then call it like a function.

## Member functions

### Hardsigmoid() {#Hardsigmoid}

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`explicit` **`Hardsigmoid`**([`HardsigmoidOptions`](./HardsigmoidOptions.md) `options` `=` `{}`)

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Constructs the module from [`options`](./Hardsigmoid.md#options) (every default when omitted).

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Declared in `ClikaRT/nn/generated/activation.h`, line 659

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### forward() {#forward}

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[`Tensor`](../Tensor.md) **`forward`**([`Tensor`](../Tensor.md) `input`) `const`

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[`forward_impl`](./Hardsigmoid.md#forward), unwrapped: raises [`ClikaRT::Error`](../Error.md) on failure.

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Declared in `ClikaRT/nn/generated/activation.h`, line 675

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### operator()() {#operator-call}

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[`Tensor`](../Tensor.md) **`operator()`**([`Tensor`](../Tensor.md) `input`) `const`

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Same as [`forward`](./Hardsigmoid.md#forward).

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Declared in `ClikaRT/nn/generated/activation.h`, line 679

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### options() {#options}

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`const` [`HardsigmoidOptions`](./HardsigmoidOptions.md)`&` **`options`**() `const`

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The settings this module was constructed with.

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Declared in `ClikaRT/nn/generated/activation.h`, line 683

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