Identifies the funciton as inline.
A function declaration with an inline specifier declares an inline function.
See ISO/IEC 14882:2003(E) 7.1.2 Function specifiers [dcl.fct.spec]
cxxFunctionDefinition
No content.
topic/state reference/state apiRef/apiQualifier apiOperation/apiQualifier cxxFunction/cxxFunctionInline