SDL_exp(3)

📦
version 3.4.18 · 9 versions
, in fedora 43, fedora 44

💖 SDL_exp — bestie's guide to e^x 💖

okay so first things first: this is the SDL_exp(3) page, part of the SDL3 FUNCTIONS collection, and it's genuinely so iconic. we're computing exponentials today and we're doing it correctly. no cap. 🦋

✨ NAME ✨

SDL_exp — compute the exponential of x. that's it, that's the whole job, and she does it flawlessly 💅

🌸 SYNOPSIS 🌸

#include <SDL3/SDL_stdinc.h>

double SDL_exp(double x);

🎀 DESCRIPTION 🎀

so the definition, right: y = exp(x) is literally y = e^x, where e is the base of the natural logarithm. queen behavior. and the inverse of this whole situation is the natural logarithm, SDL_log. they're a matched set, iykyk. 🫶

  • Domain: -INF <= x <= INF
  • Range: 0 <= y <= INF
⚠️ heads up bestie: the output will overflow if exp(x) is too large to be represented. that's not a vibe, that's just the limits of floating point. 😭

this function operates on double-precision floating point values. if you need single-precision floats, go use SDL_expf instead. don't mix them up, it's giving chaos. 🙈

okay and this part is important so listen up: 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. so like... don't go comparing exact bits across systems and expecting them to match. that's not a bug, that's just the deal. periodt. 💀

🌈 FUNCTION PARAMETERS 🌈

  • x — floating point value. that's the whole parameter, she's lowkey simple but highkey essential ⭐

👑 RETURN VALUE 👑

Returns value of e^x. that's it. that's the tea. 🍓

🧚 THREAD SAFETY 🧚

It is safe to call this function from any thread. so go wild, call her from all the threads, she can handle it. main character energy fr fr. 💜

⭐ AVAILABILITY ⭐

This function is available since SDL 3.2.0. if you're on anything older, bestie, you gotta update. no cap. 🔥

💅 SEE ALSO 💅

and that's the whole page!! stay slay, keep your exponentials finite, and remember: this came to you from Simple Directmedia Layer, SDL 3.4.18 edition — thanks for reading, mwah 💖✨🎀

📦 where this page comes from