lapacke_cuncsd_work.c(3)

Okay bestie, so this is the manual page for lapacke_cuncsd_work.c from the LAPACK crew, and it's literally just the function signature and vibes. No cap, that's the whole meal. Let's get into it. 🫶

✨ NAME ✨

lapacke_cuncsd_work.c — that's the name, that's the whole section. Iconic minimalism, honestly.

🌸 SYNOPSIS 🌸

First thing you need is the include, periodt:

#include 'lapacke_utils.h'

🎀 Functions 🎀

• lapack_int LAPACKE_cuncsd_work(...) — the one and only function on this page. She's long, she's complex-float coded, and she's the main character. Here's her full signature exactly as the manual gives it:

lapack_int LAPACKE_cuncsd_work (int matrix_layout, char jobu1, char
    jobu2, char jobv1t, char jobv2t, char trans, char signs, lapack_int
    m, lapack_int p, lapack_int q, lapack_complex_float *x11, lapack_int
    ldx11, lapack_complex_float *x12, lapack_int ldx12,
    lapack_complex_float *x21, lapack_int ldx21, lapack_complex_float
    *x22, lapack_int ldx22, float *theta, lapack_complex_float *u1,
    lapack_int ldu1, lapack_complex_float *u2, lapack_int ldu2,
    lapack_complex_float *v1t, lapack_int ldv1t, lapack_complex_float
    *v2t, lapack_int ldv2t, lapack_complex_float *work, lapack_int
    lwork, float *rwork, lapack_int lrwork, lapack_int *iwork)

That's a lot of arguments, bestie. She ate and left no crumbs. 💅

💅 Function Documentation 💅

Here's the function again because the manual said "run it back" and honestly? Respect.

lapack_int LAPACKE_cuncsd_work (int matrix_layout, char jobu1, char jobu2,
    char jobv1t, char jobv2t, char trans, char signs, lapack_int m,
    lapack_int p, lapack_int q, lapack_complex_float * x11, lapack_int
    ldx11, lapack_complex_float * x12, lapack_int ldx12,
    lapack_complex_float * x21, lapack_int ldx21, lapack_complex_float *
    x22, lapack_int ldx22, float * theta, lapack_complex_float * u1,
    lapack_int ldu1, lapack_complex_float * u2, lapack_int ldu2,
    lapack_complex_float * v1t, lapack_int ldv1t, lapack_complex_float *
    v2t, lapack_int ldv2t, lapack_complex_float * work, lapack_int lwork,
    float * rwork, lapack_int lrwork, lapack_int * iwork)

Definition at line 36 of file lapacke_cuncsd_work.c.

Heads up bestie, this is the _work version, so you're bringing your own scratch space: work, rwork, and iwork are all on you. She's not allocating anything for you, she's just doing the math. 🧚

Let's do a vibe check on every single parameter so you know exactly what's in the group chat:

• matrix_layout — an int that tells LAPACKE how your matrices are laid out in memory. It's the organization of the whole situation.
• jobu1 — a char that runs the show for u1. Job flags are literally the directors of this function.
• jobu2 — same energy, but for u2.
• jobv1t — the char flag for v1t. She's got her own job to do.
• jobv2t — and this one's for v2t.
• trans — a char about transposition. It's giving "are we flipping this or not, decide".
• signs — another char, this one dealing with signs. Lowkey mysterious, highkey important.
• m — a lapack_int dimension. She's just a number but she matters.
• p — another lapack_int. The p is silent but the int is not.
• q — third lapack_int. Q is unforgettable, periodt.
• x11 — pointer to a lapack_complex_float block. It's a matrix chunk, bestie.
• ldx11 — lapack_int leading dimension for x11. The ld stands for leading dimension, not "lil drama" (though there is drama).
• x12 — another lapack_complex_float *. Matrix block number two, she's back.
• ldx12 — the lapack_int leading dimension for x12. Keep up, we're speedrunning.
• x21 — lapack_complex_float *, block three. The plot thickens.
• ldx21 — its lapack_int leading dimension. She's matching energy.
• x22 — lapack_complex_float *, block four. The final matrix chunk of this set.
• ldx22 — the lapack_int leading dimension for x22. We love a consistent naming scheme.
• theta — a float *. The manual doesn't elaborate, so I won't either. She's a pointer and she's named theta.
• u1 — lapack_complex_float *. A matrix pointer, living her best life.
• ldu1 — lapack_int leading dimension for u1. Do not skip her.
• u2 — lapack_complex_float *. Another pointer, another slay.
• ldu2 — the lapack_int leading dimension for u2. Matching set.
• v1t — lapack_complex_float *. Pointer, iconic.
• ldv1t — lapack_int leading dimension for v1t. The t is right there in the name, bestie.
• v2t — lapack_complex_float *. Another pointer, another moment.
• ldv2t — the lapack_int leading dimension for v2t. Yes, the pattern continues.
• work — lapack_complex_float *. This is the scratch space, the reason she's called _work. You provide her.
• lwork — lapack_int, the size of work. You literally have to tell her how much room there is.
• rwork — float * real workspace. Because sometimes you need a real-typed friend to support the complex ones.
• lrwork — lapack_int, the size of rwork. More room, more responsibility.
• iwork — lapack_int * integer workspace. The third and final workspace, she's thorough.

And that's the whole function signature, no cap. Every argument accounted for. 🌈

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

That's literally it. The robot did the docs and she ate. 🤖✨

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This iconic manual page is from LAPACK Version 3.8.0, dated Tue Nov 14 2017. Stay slay, stay linked, and may your lwork always be big enough. 💖🦋💅