---
title: "ClikaRT::nn::Hardtanh"
sidebar_label: "Hardtanh"
description: "Clamps every element to [min_val, max_val]. The module form of ClikaRT::ops::hardtanh, which documents the full contract (shapes, dtypes, errors); construct once, then call it like a function."
---

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

Clamps every element to \[min\_val, max\_val\]. The module form of [`ClikaRT::ops::hardtanh`](../ops/hardtanh.md#hardtanh), which documents the full contract (shapes, dtypes, errors); construct once, then call it like a function.

## Member functions

### Hardtanh(HardtanhOptions) {#Hardtanh}

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`explicit` **`Hardtanh`**([`HardtanhOptions`](./HardtanhOptions.md) `options` `=` `{}`)

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

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Declared in `ClikaRT/nn/generated/activation.h`, line 785

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### Hardtanh(double, double) {#Hardtanh-2}

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`explicit` **`Hardtanh`**(`double` `min_val`, `double` `max_val` `=` `1.0`)

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`Hardtanh(min_val, max_val)`: the positional form of `HardtanhOptions(min_val, max_val)`.

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Declared in `ClikaRT/nn/generated/activation.h`, line 788

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

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Declared in `ClikaRT/nn/generated/activation.h`, line 808

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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`](./Hardtanh.md#forward).

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Declared in `ClikaRT/nn/generated/activation.h`, line 812

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### options() {#options}

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`const` [`HardtanhOptions`](./HardtanhOptions.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 816

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