lis_array_matmat(3)

💖 lis_array_matmat — the matrix-matrix product girlie 💖

okay so bestie, this is a page from the Lis Library Functions manual (section 3, the library-call girlies 🎀), and today's main character is lis_array_matmat. she does exactly one thing and she does it flawlessly: she multiplies two matrices. periodt. 💅

✨ SYNOPSIS ✨

#include "lis.h"

LIS_INT lis_array_matmat(LIS_INT n, LIS_SCALAR a[], LIS_SCALAR b[],
LIS_SCALAR c[], LIS_INT op);

like… look at her. 🫶

🌸 DESCRIPTION 🌸

She calculates the matrix-matrix product AB. that's it, that's the whole vibe. no cap. ✨

👑 INPUT 👑

• n — the size of the matrices, bestie. just a number. 🦋
• a — the array that stores matrix A, and it's size n * n. iconic.
• b — the array that stores matrix B, also size n * n. slay.
• c — the array that stores matrix C, size n * n as well. the trinity fr fr. 💜
• op — the mood of the operation, and there are exactly two moods:
  • LIS_INS_VALUE — gives you C = AB. fresh start energy, she overwrites. 🌈
  • LIS_SUB_VALUE — gives you C = C - AB. she's subtracting the product off of what was already in there, like a glow-down but mathematically. 😭

💖 OUTPUT 💖

• C — C. yeah. that's the output. she said what she said. 💀

⭐ EXIT STATUS ⭐

the following exit values are returned, bestie:

• 0 — the process is normally terminated. we love a clean exit. 🎀
• unspecified — an error occurred. not the vibe. 🙈

🦋 SEE ALSO 🦋

• lis(3)
• http://www.ssisc.org/lis/

okay that's the whole page, you're basically a linear algebra girlie now 💅✨

this cutie is brought to you by the Lis Library Functions manual, man page dated 3 Dec 2014, filed under lis_array_matmat(3) — mwah, go multiply something 🫶🌸