PICK_ARG(9)

✨ NAME ✨

okay so bestie, this is PICK_ARG(9) from the Kernel API Manual, and the whole vibe is simple: it returns the n-th argument. periodt 💅

🎀 SYNOPSIS 🎀

the signature is literally right here, no cap:

PICK_ARG (n , args... );

🌸 ARGUMENTS 🌸

• n — the argument number to be returned, bestie — like, which one you want back.
• args — the arguments themselves. the whole squad.

🦋 DESCRIPTION 🦋

okay so this helper macro is lowkey here to manipulate the argument list before passing it to the next level macro. no cap, that's the whole job. 💖

like COUNT_ARGS, this macro supports n up to 12. and the specialized macros PICK_ARG1 to PICK_ARG12 are also available — iconic, honestly. ✨

🌟 EXAMPLE 🌟

the page lays out the definitions like this (yes, literally):

#define foo     X,Y,Z,Q #define bar     PICK_ARG(2, foo) #define buz
PICK_ARG3(foo)

with the above definitions, bar expands to Y and buz expands to Z. slay. 🔥

👑 SEE ALSO 👑

kernel file ./drivers/gpu/drm/xe/xe_args.h — and the whole bestie squad, iykyk:

• CALL_ARGS(9)
• DROP_FIRST_ARG(9)
• FIRST_ARG(9)
• LAST_ARG(9)
• IF_ARGS(9)
• ARGS_SEP_COMMA(9)

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okay that's the page, bestie. this one comes from ./drivers/gpu/drm/xe and is dated October 2026 — mwah, bye 🫶✨