umin(9)

💖 umin(9) 💖

okay so you're reading the Kernel API Manual bestie, and this page is all about umin — literally just "return minimum of two non-negative values". and there's a lil footnote-style clause right after it: signed types are zero extended to match a larger unsigned type. that's the whole vibe. ✨

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🌸 SYNOPSIS 🌸

umin (x , y );

that's it. that's the call. two args, one tiny little winner. 🎀

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🦋 ARGUMENTS 🦋

• x — first value 🫶
• y — second value 🫶

two lil contestants, one gets crowned. no cap.

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👑 SEE ALSO 👑

this is the friend group, and they're all iconique:

Kernel file ./include/linux/minmax.h — the home base for this whole squad 💅

• min(9)
• max(9)
• umax(9)
• min3(9)
• max3(9)
• min_t(9)
• max_t(9)
• min_not_zero(9)
• clamp(9)
• clamp_t(9)
• clamp_val(9)
• min_array(9)
• max_array(9)
• in_range(9)
• swap(9)

like, the way this is basically a whole minmax friend group and umin is just one member serving looks 😭🔥 go read the rest, they all ate.

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lowkey reminder: signed types get zero extended to match a larger unsigned type — that's the fine print and it's fr fr part of the deal, don't skip it 💀

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and that's the page! brought to you by ./include/linux, dated October 2026, straight from the Kernel API Manual — umin(9) out. mwah 💋🌈⭐