SDL_asinf(3)

💖 SDL_asinf 💖

okay bestie, welcome to the SDL_asinf(3) page from the SDL3 FUNCTIONS girlies ✨ this one lives in the <SDL3/SDL_stdinc.h> header and it's literally just here to do one (1) thing and do it cute.

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✨ SYNOPSIS ✨

#include <SDL3/SDL_stdinc.h>

float SDL_asinf(float x);

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🦋 DESCRIPTION 🦋

so the whole vibe is: y = asin(x) is defined by x = sin(y). that's it, that's the definition, no cap 🫶

Domain: -1 <= x <= 1

Range: -Pi/2 <= y <= Pi/2

this one is the single-precision floating point girlie 💅 if you need double-precision floats, go use SDL_asin instead, she's built different (literally).

⚠️ okay important heads up: this function may use a different approximation across different versions, platforms and configurations. like, it can straight up return a different value for the same input on different machines or operating systems, or if SDL gets updated. so don't be out here assuming it's gonna be byte-identical everywhere, because she is not. 🙈

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🌸 FUNCTION PARAMETERS 🌸

• x — a floating point value. that's the whole input, bestie, she's simple like that 💜

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⭐ RETURN VALUE ⭐

returns the arc sine of x, in radians. periodt. 🔥

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🧚 THREAD SAFETY 🧚

it is safe to call this function from any thread. go off, multithreaded queen 👑

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🌈 AVAILABILITY 🌈

this function is available since SDL 3.2.0. iconic behavior honestly.

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🎀 SEE ALSO 🎀

• SDL_asin(3)
• SDL_acosf(3)
• SDL_sinf(3)

go read those too, they're all part of the same math-y friend group 💖

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and that's the whole page!! brought to you by Simple Directmedia Layer, running SDL 3.4.18 — mwah, slay, bye bestie 🫶✨💅