SDL_acos(3)

✨ SDL_acos ✨

okay bestie, welcome to the SDL3 FUNCTIONS corner of the manual, where we're about to get triggy with it 💅 this one's all about SDL_acos(3) and honestly? it's giving math girlie main character energy 🎀

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🌸 NAME 🌸

SDL_acos — compute the arc cosine of x.

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🦋 SYNOPSIS 🦋

#include <SDL3/SDL_stdinc.h>

double SDL_acos(double x);

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💖 DESCRIPTION 💖

so like, the definition of y = acos(x) is literally x = cos(y). that's it, that's the vibe. 🫶

Domain: -1 <= x <= 1

Range: 0 <= y <= Pi

this function is out here operating on double-precision floating point values, so if you're working with single-precision floats you gotta go use SDL_acosf instead, iykyk ✨

and listen — this function may use a different approximation across different versions, platforms and configurations. i.e., it can return a different value given the same input on different machines or operating systems, or if SDL is updated. no cap, that's just how it is 🙈 so don't come for her when your numbers look slightly off on another box, she warned you 💀

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🧚 FUNCTION PARAMETERS 🧚

• x — floating point value. that's the one, the only, the input 👑

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🌈 RETURN VALUE 🌈

Returns arc cosine of x, in radians. periodt. 💅

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🔥 THREAD SAFETY 🔥

It is safe to call this function from any thread. yes bestie, any thread — go wild, she's built different 🫶✨

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⭐ AVAILABILITY ⭐

This function is available since SDL 3.2.0. so if you're on something older... bestie, upgrade 😭

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👑 SEE ALSO 👑

• SDL_acosf(3)
• SDL_asin(3)
• SDL_cos(3)

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and that's the whole page, you ate that 🍓 mwah 💜

Simple Directmedia Layer — SDL 3.4.18 — written by the SDL girlies, delivered to you with love and a lil sparkle ✨🎀🦋 bye bestie, go compute some angles 💖