lis_matrix_malloc(3f)

💖 lis_matrix_malloc(3f) — it's giving "gimme RAM for my matrix" ✨

okay bestie, welcome to lis_matrix_malloc(3f), a function from the Lis Library Functions manual 💅 this one's short and sweet and honestly kinda iconic — it's the moment your matrix gets its very own memory. let's go 🦋

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🌸 NAME 🌸

lis_matrix_malloc — allocate the memory for the matrix 🎀

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⭐ SYNOPSIS ⭐

subroutine lis_matrix_malloc(MATRIX A, LIS_INTEGER nnz_row, LIS_INTEGER
nnz[], LIS_INTEGER ierr);

like… look at that signature. MATRIX A, two LIS_INTEGER things, and an ierr to tell you how it went 🫶 no cap.

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🧚 DESCRIPTION 🧚

bestie. this is the whole point. lis_matrix_malloc allocates the memory for matrix A. that's it. that's the function. it sets up the space so your matrix can actually hold its nonzeros instead of just… existing conceptually 😭💀

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👑 INPUT 👑

• A — The matrix 💜 this is the one getting the memory, the main character of this operation fr fr.
• nnz_row — The average number of nonzero elements ✨ it's an average, so it's an estimate-y vibe, but that's literally what it is.
• nnz — The array of the numbers of the nonzero elements in each row 🌈 so instead of one average number, you hand over per-row counts. precise. meticulous. ate.

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🙈 OUTPUT 🙈

None. zero. nada. it does its thing quietly and doesn't hand you back a value 💅 (well, except ierr in the synopsis, but that's not an output here, bestie, keep up 🎀)

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🚨 NOTE 🚨

Either nnz_row or nnz must be provided. like, you have to give it at least one of them. not both-optional-together. one of them. periodt. 🔥

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🦋 SEE ALSO 🦋

• lis(3) — the big one, the mothership 👑
• http://www.ssisc.org/lis/ — the site, go look, iykyk 🌐

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and that's the whole page, bestie!! short king behavior, but honestly the memory allocation has to happen before anything else slays, so it's lowkey essential 🌟

signing off with the deets: this was the Man Page for lis_matrix_malloc(3f), dated 6 Sep 2012 💖 stay hydrated, allocate responsibly, bye babes 🌸🫶✨