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Forces all inline functions to be treated as if they are qualified with
__inline. In C++, inline functions are functions that are defined inside a struct, class, or union definition.
--forceinline, the compiler always attempts to inline those functions, if possible. However, it does not inline a function if doing so causes problems. For example, a recursive function is inlined into itself only once.
__inlineexcept that the compiler tries harder to do the inlining.