PACKDOUBLE2X32(3G)

💖 packDouble2x32 — the manual page, bestie edition ✨

okay so this is packDouble2x32(3G) from the 3G section of the manual, and babes, it is literally the glow-up spell for turning two lil unsigned ints into one big double. no cap.

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🌸 NAME 🌸

packDouble2x32 — create a double-precision value from a pair of unsigned integers 🫶

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✨ DECLARATION ✨

double packDouble2x32(uvec2 v);

that's it. that's the whole signature. she's short and she's iconic 💅

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🎀 PARAMETERS 🎀

• v — bestie, this is a vector of two unsigned integers that we're packing into a single double-precision result. two girls, one double. it's giving ✨ compression ✨

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🦋 DESCRIPTION 🦋

okay so packDouble2x32 packs the component of the parameter v into a 64-bit value. that's the whole vibe.

⚠️ but listen. if an IEEE-754 infinity or NaN gets created, it will not signal and the resulting floating-point value is undefined. no drama, no error message, just vibes that we cannot promise you. 🫠

otherwise? otherwise the bit-level representation of v is preserved. untouched. pristine. flawless.

the way the bits work is genuinely so clean:

• the first vector component, v[0], specifies the 32 least significant bits of the result 🥰
• the second component, v[1], specifies the 32 most significant bits 👑

low bits first, high bits second. iykyk.

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🌈 VERSION SUPPORT 🌈

so this is the part where the original page does a whole table situation, and i love that for her, but we're doing a list, periodt. here's the OpenGL Shading Language Version tea for the function name packDouble2x32:

• 1.10 — -
• 1.20 — -
• 1.30 — -
• 1.40 — -
• 1.50 — -
• 3.30 — -
• 4.00 — ✔
• 4.10 — ✔
• 4.20 — ✔
• 4.30 — ✔
• 4.40 — ✔
• 4.50 — ✔

translation: 4.00 and up only, bestie. before that she simply did not exist. the early versions said not me 🙈

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👑 SEE ALSO 👑

• unpackDouble2x32() — the reverse girly. she takes it all apart again 🧚

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💜 COPYRIGHT 💜

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

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and that's the whole page, angel 💖

source: [FIXME: source] — yes it literally says that, we don't make the rules 🫠 date: 01/03/2018 — an elder, but a legend 👑

mwah. go pack some doubles. slay 🌟🍓