---
title: "ClikaRT::ops::hash_256"
sidebar_label: "hash_256"
description: "256-bit sibling of hash_64; same byte/portability contract. [4] UInt64 (little-endian limb order)."
---

<!-- Generated by tools/doxygen2mdx from Doxygen XML. Do not edit. -->

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

## hash\_256() {#hash_256}

<div class="api-signature">

[`Tensor`](../Tensor.md) **`hash_256`**([`Tensor`](../Tensor.md) `input`, `std::uint64_t` `seed` `=` `0`)

</div>

256-bit sibling of [`hash_64`](./hash_64.md#hash_64); same byte/portability contract.

**Returns:** `[4]` UInt64 (little-endian limb order).

**Throws**

- `ClikaRT::Error`: when the input's dtype is not served for this operation (the machine-readable reason rides `code_name()`).

<div class="api-declared">

Declared in `ClikaRT/compute/ops.h`, line 4490

</div>