---
title: "ClikaRT::nn::Unflatten"
sidebar_label: "Unflatten"
description: "Splits the dimension dim into sizes, whose product must equal its extent; a view when the layout permits."
---

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

Splits the dimension `dim` into `sizes`, whose product must equal its extent; a view when the layout permits. The module form of [`ClikaRT::ops::unflatten`](../ops/unflatten.md#unflatten), which documents the full contract (shapes, dtypes, errors); construct once, then call it like a function.

## Member functions

### Unflatten(UnflattenOptions) {#Unflatten}

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`explicit` **`Unflatten`**([`UnflattenOptions`](./UnflattenOptions.md) `options`)

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

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Declared in `ClikaRT/nn/generated/flatten.h`, line 133

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

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`explicit` **`Unflatten`**(`std::int64_t` `dim`, `std::vector<std::int64_t>` `sizes`)

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`Unflatten(dim, sizes)`: the positional form of `UnflattenOptions(dim, sizes)`.

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Declared in `ClikaRT/nn/generated/flatten.h`, line 136

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

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Declared in `ClikaRT/nn/generated/flatten.h`, line 148

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

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Declared in `ClikaRT/nn/generated/flatten.h`, line 152

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### options() {#options}

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

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The settings this module was constructed with.

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Declared in `ClikaRT/nn/generated/flatten.h`, line 156

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