ULONGLONG is in fact a Windows Drivers Kit specific type. WDK has its own specialised set of weird and uncomfortable type conventions in the MS style [0] and al

ULONGLONG is in fact a Windows Drivers Kit specific type. WDK has its own specialised set of weird and uncomfortable type conventions in the MS style [0] and although the author's point about C arithmetic type promotion is generic, his context is WDK device drivers, so ULONGLONG is absolutely correct, if possibly somewhat archaic (there's a ULONG64 lately). [0] https://www.osr.com/blog/2015/05/27/newbie-corner-theres-type-unexpected-world-windows-kernel-types/ https://www.osr.com/blog/2015/05/27/newbie-corner-theres-typ...