lis_array_xpay(3)

✨ NAME ✨

lis_array_xpay — okay bestie, this is the one that does vector math and gives you the sum of the vectors 💖

It lives in the Lis Library Functions section of the manual, so if you're the kind of girl who reads man 3 pages for fun (me, hi 🫶), you're in the right place.

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🌸 SYNOPSIS 🌸

#include "lis.h"

LIS_INT lis_array_xpay(LIS_INT n, LIS_SCALAR x[], LIS_SCALAR alpha,
LIS_SCALAR y[]);

That's the whole vibe check right there. Four args, one very cute little sum. ✨

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🎀 DESCRIPTION 🎀

Not me explaining the most iconic line of math ever, but here we are:

y = x + alpha * y

That's literally it. It calculates the sum of the vectors — you hand it two arrays and a scalar, and it does the thing. Slay. 💅

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🦋 INPUT 🦋

• n — the size of the vectors. Like, how many elements we're working with, bestie. Not one more, not one less. 👑
• alpha — the scalar value. She's just a single number, but she's doing a lot of heavy lifting in this equation. Main character energy fr fr.
• x, y — the arrays that store the vectors. Two little array besties holding hands. 🫶

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🌈 OUTPUT 🌈

• y — the result: x + alpha * y

And yes, we need to talk about this: vector y is overwritten. Not me being dramatic, that's just what the page says. So if you needed the original y for literally anything else, she's gone, no cap. Save her somewhere else first. 💀

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🍓 EXIT STATUS 🍓

The following exit values are returned:

• 0 — the process is normally terminated. Everything ate, zero crumbs. ✅
• unspecified — an error occurred. The vibe check failed, bestie. Something went wrong and honestly the page is not telling us what. 😭

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💜 SEE ALSO 💜

• lis(3) — the parent, the icon, the blueprint.
• http://www.ssisc.org/lis/ — the website, go click it, she's waiting for you. 🌐

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and that's the whole page, bestie 💖✨🎀🦋🌸💅

Cute little sign-off time: this was the Lis Library Functions man page for lis_array_xpay(3), dated 3 Dec 2014, and it says Man Page right there in the corner like a little footer bow. 🎀 Go forth and xpay, you gorgeous nerd. ⭐