__forceinline keyword forces the compiler
to compile a C or C++ function inline.
The semantics of
__forceinline are exactly
the same as those of the C++ inline keyword. The compiler
attempts to inline a function qualified as
regardless of its characteristics. However, the compiler does not
inline a function if doing so causes problems. For example, a recursive
function is inlined into itself only once.
__forceinline is a storage class qualifier.
It does not affect the type of a function.
This keyword has the function attribute equivalent