---
title: "ClikaRT::ops::IndexBound"
sidebar_label: "IndexBound"
description: "An integer-typed op bound, a reshape dim: either a concrete int64_t literal or a 0-D/1-D integer Tensor (e.g."
---

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**Header:** `ClikaRT/compute/tensor.h`

An integer-typed op bound, a reshape dim: either a concrete `int64_t` literal or a 0-D/1-D integer [Tensor](../Tensor.md) (e.g. a [`shape_host`](./shape_host.md#shape_host) read), so a shape-consuming argument composes without pulling concrete sizes to the host. Narrower than [`ScalarOrTensor`](./ScalarOrTensor.md) by design: no float ctor ([`reshape`](./reshape.md#reshape)`(x, {1.5})` fails at compile time) and `bool` is deleted (it would otherwise promote silently to an index).

## Member functions

### IndexBound() {#IndexBound}

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**`IndexBound`**() `=default`

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Absent: a slice slot left open ("from the beginning" / "to the end"). A reshape dim must not be absent (the op refuses it).

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Declared in `ClikaRT/compute/tensor.h`, line 844

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### IndexBound(nullopt\_t) {#IndexBound-2}

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**`IndexBound`**(`std::nullopt_t`)

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Absent, spelled `std::nullopt` (the same open-bound meaning as the default ctor).

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Declared in `ClikaRT/compute/tensor.h`, line 846

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### IndexBound(T) {#IndexBound-3}

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`template <``typename T`, `typename std::enable_if<std::is_integral<T>::value &&!std::is_same<T, bool>::value, int>::type` `=` `0``>`<br />**`IndexBound`**(`T` `v`)

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A concrete integer bound; any integral width, kept exact.

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Declared in `ClikaRT/compute/tensor.h`, line 852

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### IndexBound(Tensor) {#IndexBound-4}

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**`IndexBound`**([`Tensor`](../Tensor.md) `tensor`)

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A tensor bound (0-D/1-D integer [Tensor](../Tensor.md)); consumed on-device, no host sync.

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Declared in `ClikaRT/compute/tensor.h`, line 854

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### IndexBound(bool) {#IndexBound-5}

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**`IndexBound`**(`bool`) `=delete`

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Declared in `ClikaRT/compute/tensor.h`, line 855

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### has\_value() {#has_value}

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`bool` **`has_value`**() `const`

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True when a bound is present (integer or tensor); absent = open.

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Declared in `ClikaRT/compute/tensor.h`, line 857

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### is\_tensor() {#is_tensor}

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`bool` **`is_tensor`**() `const`

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True for the tensor arm.

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Declared in `ClikaRT/compute/tensor.h`, line 859

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### is\_int() {#is_int}

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`bool` **`is_int`**() `const`

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True for the integer arm.

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Declared in `ClikaRT/compute/tensor.h`, line 861

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### int\_value() {#int_value}

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`std::int64_t` **`int_value`**() `const`

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The integer bound; meaningful when [`is_int()`](./IndexBound.md#is_int).

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Declared in `ClikaRT/compute/tensor.h`, line 863

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### tensor() {#tensor}

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`const` [`Tensor`](../Tensor.md)`&` **`tensor`**() `const`

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The tensor bound; meaningful when [`is_tensor()`](./IndexBound.md#is_tensor).

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Declared in `ClikaRT/compute/tensor.h`, line 865

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