====== bitfields ======

macros / bitops / bitfields / bit

[[https://stackoverflow.com/questions/31253045/c-macro-to-create-bitfield-defines|C Macro to Create Bitfield Defines]]

[[https://github.com/torvalds/linux/blob/master/drivers/video/fbdev/riva/nvreg.h#L30|drivers/video/fbdev/riva/nvreg.h#L30]]