fixp_sin32_rad(9)

🌸 NAME 🌸

fixp_sin32_rad — calculates the sin of an angle in radians 💫

Okay so this is the Kernel API Manual page for it, bestie — welcome to the math corner 🧮✨

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✨ SYNOPSIS ✨

s32 fixp_sin32_rad (u32 radians , u32 twopi );

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🎀 ARGUMENTS 🎀

• radians — the angle, in radians 📐
• twopi — the value to be used for 2*pi 🌀

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💅 DESCRIPTION 💅

So this function provides a variant for the cases where just 360 values is not enough. It uses linear interpolation to a wider range of values given by the twopi var — lowkey iconic behavior, fr fr ✨

Experimental tests gave a maximum difference of 0.000038 between the value calculated by sin and the one produced by this function, when twopi is equal to 360000. That seems to be enough precision for practical purposes 👑💖

Please notice: two high numbers for twopi could cause overflows, so the routine will not allow values of twopi bigger than 1^18 ⚠️💀

It’s giving “precise enough but don’t push your luck,” no cap 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/fixp-arith.h
• __fixp_sin32(9)
• fixp_sin32(9)
• fixp_linear_interpolate(9)

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Byeee bestie 💖 — source/version is ./include/linux, dated October 2026 🎀🦋