MSVC的double和long double虽然都是8字节的表示，但是是不同的类型

Microsoft-specific: The long double and double types have the same representation, but are distinct types. For more information, see Built-in types.
https://learn.microsoft.com/en-us/cpp/standard-library/complex-long-double?view=msvc-170

【 在 mvtec 的大作中提到: 】
: msvc的long double和double是一个类型
: gcc和clang的long double 是16 bytes
: 我没明白为啥long double不能match 42.3
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