sdlIsupper function
extern DECLSPEC int SDLCALL SDL_isupper(int x)
Implementation
int sdlIsupper(int x) {
final sdlIsupperLookupFunction =
libSdl2.lookupFunction<Int32 Function(Int32 x), int Function(int x)>(
'SDL_isupper');
return sdlIsupperLookupFunction(x);
}