LOG2(3G)

📦
version 1.0~svn33624 · 4 versions
, in ubuntu jammy, ubuntu noble

💖 LOG2 — the base 2 logarithm one 💖

okay bestie, we're in the 3G manual section, and today's main character is log2. she's giving "math girlie who knows exactly what she's about" and honestly? obsessed. ✨

🌸 NAME 🌸

log2 — returns the base 2 logarithm of the parameter. that's it, that's the whole vibe. 🎀

✨ DECLARATION ✨

genType log2(genType x);

like. look at her. so clean. so simple. no cap. 🦋

🍓 PARAMETERS 🍓

  • x — the value you wanna take the base 2 logarithm of. just hand her the number and let her cook. 💅

💜 DESCRIPTION 💜

so log2 returns the base 2 logarithm of $x$, aka the value $y$ that satisfies this lil equation:

$x = 2^y$

literally the whole point. you give her a number, she tells you what power of 2 gets you there. iconic behavior. 👑

⚠️ BUT WAIT — the result is undefined if $x \leq 0$. like, do not. she cannot help you there. not her problem. it's giving undefined for a reason, bestie. 💀

🌈 VERSION SUPPORT 🌈

here's the vibe check across every OpenGL Shading Language version, and lemme tell you — she ate. every single one. no skips, no gaps, just ✨consistency✨:

  • log2 in OpenGL Shading Language version 1.10 — ✔
  • log2 in OpenGL Shading Language version 1.20 — ✔
  • log2 in OpenGL Shading Language version 1.30 — ✔
  • log2 in OpenGL Shading Language version 1.40 — ✔
  • log2 in OpenGL Shading Language version 1.50 — ✔
  • log2 in OpenGL Shading Language version 3.30 — ✔
  • log2 in OpenGL Shading Language version 4.00 — ✔
  • log2 in OpenGL Shading Language version 4.10 — ✔
  • log2 in OpenGL Shading Language version 4.20 — ✔
  • log2 in OpenGL Shading Language version 4.30 — ✔
  • log2 in OpenGL Shading Language version 4.40 — ✔
  • log2 in OpenGL Shading Language version 4.50 — ✔

twelve outta twelve. she's been here since 1.10 and she's still standing. main character energy fr fr. 🔥

🧚 SEE ALSO 🧚

if you liked log2, you're gonna wanna meet her friends:

  • exp()
  • log()
  • exp2()

the whole math squad. go say hi. 🫶

Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.

Copyright © 2011-2014 Khronos Group

and that's the page, bestie!! 💅 this was pulled from the [FIXME: source] and it's dated 01/03/2018, still living her best life in the LOG2(3G) era. mwah. 😘✨

📦 where this page comes from