23 lines
434 B
Markdown
23 lines
434 B
Markdown
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# Math::PI
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```cpp
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constexpr float PI = 3.14159265358979323846f;
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```
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圆周率常量，精确到 float 能表示的最高精度。
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**用途：** 用于三角函数计算、弧度角度转换、圆形/弧度相关计算。
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**示例：**
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```cpp
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#include <XCEngine/Math/Math.h>
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float circumference = 2.0f * Math::PI * radius;
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float area = Math::PI * radius * radius;
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```
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## 相关文档
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- [Math 总览](h.md) - 返回 Math 概览
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