---
title: "ClikaRT::ops::adaptive_avg_pool"
sidebar_label: "adaptive_avg_pool"
description: "Rank-generic adaptive average pooling to a target output size, channels-last."
---

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

## adaptive\_avg\_pool() {#adaptive_avg_pool}

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[`Tensor`](../Tensor.md) **`adaptive_avg_pool`**([`Tensor`](../Tensor.md) `input`, [`ClikaRT::Span`](../Span.md)`<const std::int64_t>` `output_size`)

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Rank-generic adaptive average pooling to a target output size, channels-last.

The window geometry is DERIVED per output position so the spatial dims land exactly on `output_size`; no kernel/stride/padding to pick.

**Parameters**

- `input`: the input, `[N, D1..Dn, C]`.
- `output_size`: target spatial extents, one per spatial dim.

**Returns:** `[N, output_size.., C]`, dtype of `input`.

**Throws**

- `ClikaRT::Error`: (`INVALID_ARGUMENT`) when `output_size`'s rank does not match the input's spatial rank.

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Declared in `ClikaRT/compute/ops.h`, line 3919

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