lis_matvect(3)

💖 lis_matvect 💖

okay bestie, so this is lis_matvect from section 3 of the Lis Library Functions manual, and it's literally the glow-up you need when you want a transposed matrix-vector product and you want it now. 🦋

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🌸 NAME 🌸

lis_matvect — calculate the matrix vector product ✨

(and yes, the name is giving "matrix vector product" but the actual math is doing the transposed one, we'll get there, keep reading bestie 💅)

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✨ SYNOPSIS ✨

#include "lis.h"

LIS_INT lis_matvect(LIS_MATRIX A, LIS_VECTOR x, LIS_VECTOR y);

like, that's it. one include, one function call, main character energy 👑

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💫 DESCRIPTION 💫

Calculate the transposed matrix vector product y = A^T x.

no cap, that's the whole vibe. you hand it a matrix, you hand it a vector, and it hands you back A transposed, times x. iconic behavior fr fr 🔥

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🎀 INPUT 🎀

• A — The matrix 🧚 the big rectangular situation, the source of all the tea
• x — The vector 🌈 the little list of numbers getting multiplied

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🫶 OUTPUT 🫶

• y — A^T x 💖 this is what you get back, the transposed product, served fresh

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⭐ EXIT STATUS ⭐

The following exit values are returned:

• 0 — The process is normally terminated ✅ slay, everything worked, we love to see it
• unspecified — An error occurred 💀 not the vibe. something went wrong and the details are, uh, unspecified. lowkey ominous ngl

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🔍 SEE ALSO 🔍

• lis(3) — the main character, go read it 👑
• http://www.ssisc.org/lis/ — the website, the lore, the whole ecosystem 🦋

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and that's the page, bestie!! this one came straight out of the Lis Library Functions manual, lis_matvect(3), dated 6 Sep 2012 — yeah she's an elder but she still ate 💅✨ go forth and transpose responsibly 🎀