lis_input_matrix(3)

💖 lis_input_matrix — bestie, let's read a matrix 💖

okay so this is lis_input_matrix from the Lis Library Functions manual (section 3, the library-call girlies 🫶), and it's literally the glow-up moment where your matrix goes from "just vibes in a file" to "actual data structure". no cap.

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✨ SYNOPSIS ✨

#include "lis.h"

LIS_INT lis_input_matrix(LIS_MATRIX A, char *filename);

that's it. that's the whole thing. two arguments, one header, iconic behavior 👑

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🌸 DESCRIPTION 🌸

so like. you have a matrix. and it's outside. sitting in some external file, just existing, minding its own business. lis_input_matrix is the function that goes and reads that matrix data from the external file and brings it home. main character energy fr fr 💅

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🎀 INPUT 🎀

• filename — the source file. like, the file where your matrix is currently living. you hand it over, it gets read. that's the whole deal ✨

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🦋 OUTPUT 🦋

• A — the matrix. this is where the data lands after the read. you pass it in, it comes back holding the goods 💖

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⭐ EXIT STATUS ⭐

here's the vibe check on how it can end. the following exit values are returned:

• 0 — the process is normally terminated. slay. everything went off without a hitch 🌈
• unspecified — an error occurred. 😭 not me getting an unspecified error. it's giving mystery. it's giving no further details. anyway bestie, something went wrong.

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📝 NOTE 📝

the following file formats are supported, so like, don't show up with anything else because it will NOT eat:

• the Matrix Market format
• the Harwell-Boeing</harwell> format

two formats. that's the menu. those are the only two on the menu 🍓

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👀 SEE ALSO 👀

• lis(3)
• http://www.ssisc.org/lis/

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and that's the whole page, bestie 🧚💜 Lis Library Functions, dated 6 Sep 2012. go read that matrix. you got this. periodt. 💅✨