---
title: "ClikaRT::nn::MaxPool2d"
sidebar_label: "MaxPool2d"
description: "Max pooling over a 2-D window; the input is channels-last [N, D1..D2, C]."
---

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

Max pooling over a 2-D window; the input is channels-last `[N, D1..D2, C]`. The module form of [`ClikaRT::ops::max_pool2d`](../ops/max_pool2d.md#max_pool2d), which documents the full contract (shapes, dtypes, errors); construct once, then call it like a function.

## Member functions

### MaxPool2d(MaxPool2dOptions) {#MaxPool2d}

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`explicit` **`MaxPool2d`**([`MaxPool2dOptions`](./MaxPool2dOptions.md) `options`)

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Constructs the module from [`options`](./MaxPool2d.md#options).

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Declared in `ClikaRT/nn/generated/pooling.h`, line 206

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### MaxPool2d(vector\<int64\_t\>) {#MaxPool2d-2}

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`explicit` **`MaxPool2d`**(`std::vector<std::int64_t>` `kernel_size`)

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`MaxPool2d(kernel_size)`: the positional form of `MaxPool2dOptions(kernel_size)`.

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Declared in `ClikaRT/nn/generated/pooling.h`, line 209

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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`](./MaxPool2d.md#forward), unwrapped: raises [`ClikaRT::Error`](../Error.md) on failure.

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Declared in `ClikaRT/nn/generated/pooling.h`, line 223

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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`](./MaxPool2d.md#forward).

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Declared in `ClikaRT/nn/generated/pooling.h`, line 227

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### options() {#options}

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`const` [`MaxPool2dOptions`](./MaxPool2dOptions.md)`&` **`options`**() `const`

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The settings this module was constructed with.

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Declared in `ClikaRT/nn/generated/pooling.h`, line 231

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