# Cross Up (CROSSUP)

> QuantNexus indicator page for upward crossover detection.

**Route**: `/quantnexus/indicators/crossup/`

## What It Does

CROSSUP detects an upward crossing event. It is a basic trigger for bullish entries or momentum continuation.

## Formula

`Cross Up = fast line crosses above slow line`

## Parameters

- `period` - default `252`
- `maperiod` - default `2`
- `_movav` - default `SMA`

## C++23 API

```cpp
#include <nonabt/indicators/crossup.hpp>
auto crossup = std::make_unique<nonabt::CROSSUP>(data().close(), 252, 2, "SMA");
```

## Common Usage

- Use CROSSUP for bullish entry logic.
- Combine with thresholds or trend filters.
- Helpful as a clean event trigger.

## Practical Pattern

Cross Up is usually one of the simplest confirmation signals in a crossover-based system.