fix: improve doc link navigation and tree display
- Fix link resolution with proper relative/absolute path handling - Improve link styling with underline decoration - Hide leaf nodes from tree, only show directories - Fix log file path for packaged app
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# Math::EPSILON
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```cpp
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constexpr float EPSILON = 1e-6f;
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```
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`EPSILON` 是一个非常小的浮点数常量,值为 0.000001。该常量主要用于浮点数比较,由于浮点数精度问题,直接使用 `==` 比较浮点数可能产生错误结果,此时应使用 `EPSILON` 进行容差比较。例如判断两个浮点数是否相等,可以检查它们的差的绝对值是否小于 `EPSILON`。
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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 a = 0.1f + 0.2f;
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float b = 0.3f;
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if (Math::Abs(a - b) < Math::EPSILON) {
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// a 和 b 可以视为相等
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}
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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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