lapacke_dgelsd_work.c(3)

💅 lapacke_dgelsd_work.c 💅

Okay so picture this: we're deep in LAPACK territory, and this little file right here? It's the manual page for lapacke_dgelsd_work.c — yes bestie, that's the name, periodt. ✨

This is the <lavender>LAPACK</lavender> gang's own documentation, so you know it's legit. 🫶

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✨ SYNOPSIS ✨

First things first — you gotta pull in the utils header, no cap:

#include 'lapacke_utils.h'

🎀 Functions

Then there's this icon right here, the whole reason we're gathered:

lapack_int LAPACKE_dgelsd_work (int matrix_layout, lapack_int m,
    lapack_int n, lapack_int nrhs, double *a, lapack_int lda, double *b,
    lapack_int ldb, double *s, double rcond, lapack_int *rank, double
    *work, lapack_int lwork, lapack_int *iwork)

That's the vibe. 💖

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🌸 Function Documentation 🌸

💜 lapack_int LAPACKE_dgelsd_work (int matrix_layout, lapack_int m, lapack_int n, lapack_int nrhs, double * a, lapack_int lda, double * b, lapack_int ldb, double * s, double rcond, lapack_int * rank, double * work, lapack_int lwork, lapack_int * iwork)

So this is like... the main character energy function of the whole page. It takes a LOT of arguments, and every single one is doing its job. Let's do a vibe check on each of them 🦋:

• matrix_layout — int, tells us how the matrices are laid out (the matrix layout vibes, essential)
• m — the lapack_int for m (rows energy)
• n — the lapack_int for n (columns energy)
• nrhs — lapack_int, the number of right-hand sides, because sometimes you got multiple things to solve
• a — a double *, pointer to the a matrix, iconic
• lda — lapack_int leading dimension of a, don't sleep on it
• b — a double *, pointer to the b matrix, also iconic
• ldb — lapack_int leading dimension of b, respect it
• s — double *, this is where the singular values go, periodt
• rcond — a double, the reciprocal condition number, lowkey important for how much you trust those tiny singular values 💀
• rank — a lapack_int *, pointer to where the effective rank lands, slay
• work — double *, the workspace, gotta have somewhere to do the work fr fr
• lwork — lapack_int, the length of work, you can't just throw any size at it
• iwork — lapack_int *, the integer workspace, also needs its space

Bestie, all those pointer arguments (a, b, s, work, iwork) and all the dimension args (m, n, nrhs, lda, ldb, lwork) plus matrix_layout and rcond — every single one shows up in the signature, no cap. I'm not skipping a single param. 🌈

Definition at line 36 of file lapacke_dgelsd_work.c. Yeah, that's where the source code lives, line 36, you're welcome. ⭐

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👑 Author 👑

This whole page? Generated automatically by Doxygen for LAPACK from the source code. So it's giving ✨auto-generated✨, not handwritten, and that's on Doxygen and LAPACK doing their thing together. Obsessed with the automation tbh. 🤖💅

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⭐ and that's the whole manual page, bestie ⭐ — no option left behind, no detail dropped. Go slay those least squares. 🎀😭🫶

For the record: LAPACK, Version 3.8.0, dated Tue Nov 14 2017 — that's the source code timestamp, iykyk. 💖