docs: update math API docs

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2026-03-20 02:35:15 +08:00
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# Quaternion::Magnitude
```cpp
float Magnitude() const
float Magnitude() const;
```
计算四元数的模长。
计算四元数的模长(欧几里得范数)
**返回:** `float` - 四元数的模长
**返回:** 四元数的模长
**线程安全:**
**复杂度:** O(1)
**示例:**
```cpp
float mag = quat.Magnitude();
#include <XCEngine/Math/Quaternion.h>
using namespace XCEngine::Math;
Quaternion q = Quaternion::FromAxisAngle(Vector3::Up(), Math::Radians(90.0f));
float mag = q.Magnitude();
```
## 相关文档
- [Quaternion](quaternion.md) - 返回类总览
- [Normalized](normalized.md) - 返回归一化四元数
- [Dot](dot.md) - 点积