clamp(9)

🎀 clamp(9) 🎀

okay bestie, welcome to the Kernel API Manual page for clamp — and yes, this is exactly the kind of tiny macro that has main character energy in the kernel ✨

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💖 NAME 💖

clamp — return a value clamped to a given range with typechecking

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🦋 SYNOPSIS 🦋

clamp (val , lo , hi );

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🌸 ARGUMENTS 🌸

• val — current value
• lo — lowest allowable value
• hi — highest allowable value

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✨ DESCRIPTION ✨

This macro checks val/lo/hi to make sure they have compatible signedness.

lowkey that's the whole vibe check: typechecking the signedness situation before anything else gets cute 💅

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🔥 SEE ALSO 🔥

Kernel file ./include/linux/minmax.h — and these iconic friends are all linked up:

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

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mwah 💋 signed off from ./include/linux, dated October 2026, still serving clamp(9) realness — bye bestie 🫶💜