ZCKGSV(3)

💅 ZCKGSV(3) — Library Functions Manual, but make it group chat ✨

okay bestie, this is the manual page for the subroutine ZCKGSV, and the manual name is Library Functions Manual. The header is the slightly cursed truncated path /home/abui...IG/zckgsv.f(3) (twice, because drama), and the actual source file path is in NAME below. No cap, we're getting into it. 🫶

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/EIG/zckgsv.f

That's the exact path, character for character, periodt. 💅

✨ SYNOPSIS ✨

🫶 Functions/Subroutines

Here's the synopsis, bestie — it's literally giving subroutine ZCKGSV:

       subroutine ZCKGSV (nm, mval, pval, nval, nmats, iseed, thresh, nmax, a,
           af, b, bf, u, v, q, alpha, beta, r, iwork, work, rwork, nin, nout,
           info)
           ZCKGSV

ngl, I'm obsessed with how exact that signature is. ✨

💜 Function/Subroutine Documentation 💜

Here's the full documented signature, exactly:

   subroutine ZCKGSV (integer nm, integer, dimension( * ) mval, integer,
       dimension( * ) pval, integer, dimension( * ) nval, integer nmats,
       integer, dimension( 4 ) iseed, double precision thresh, integer nmax,
       complex*16, dimension( * ) a, complex*16, dimension( * ) af, complex*16,
       dimension( * ) b, complex*16, dimension( * ) bf, complex*16, dimension(
       * ) u, complex*16, dimension( * ) v, complex*16, dimension( * ) q,
       double precision, dimension( * ) alpha, double precision, dimension( * )
       beta, complex*16, dimension( * ) r, integer, dimension( * ) iwork,
       complex*16, dimension( * ) work, double precision, dimension( * ) rwork,
       integer nin, integer nout, integer info)
       ZCKGSV

🎀 Purpose 🎀

The purpose is iconic: ZCKGSV tests ZGGSVD — the GSVD for M-by-N matrix A and P-by-N matrix B. That's the whole vibe check. ✨

🦋 Parameters 🦋

Here's every single parameter, no skips, no "we'll come back to it" energy — not me leaving anything out:

• NM — NM is INTEGER. It's the number of values of M contained in the vector MVAL. 💅
• MVAL — MVAL is INTEGER array, dimension (NM). These are the values of the matrix row dimension M. 🌸
• PVAL — PVAL is INTEGER array, dimension (NP). These are the values of the matrix row dimension P. 🦋
• NVAL — NVAL is INTEGER array, dimension (NN). These are the values of the matrix column dimension N. ✨
• NMATS — NMATS is INTEGER. It's the number of matrix types to be tested for each combination of matrix dimensions. If NMATS >= NTYPES (the maximum number of matrix types), then all the different types are generated for testing. If NMATS < NTYPES, another input line is read to get the numbers of the matrix types to be used. 👑
• ISEED — ISEED is INTEGER array, dimension (4). On entry, it's the seed of the random number generator. The array elements should be between 0 and 4095, otherwise they will be reduced mod 4096, and ISEED(4) must be odd. On exit, it's the next seed in the random number sequence after all the test matrices have been generated. 🎀
• THRESH — THRESH is DOUBLE PRECISION. It's the threshold value for the test ratios. A result is included in the output file if RESULT >= THRESH. To have every test ratio printed, use THRESH = 0. 🔥
• NMAX — NMAX is INTEGER. It's the maximum value permitted for M or N, used in dimensioning the work arrays. 💖
• A — A is COMPLEX*16 array, dimension (NMAX*NMAX). 🫶
• AF — AF is COMPLEX*16 array, dimension (NMAX*NMAX). 💜
• B — B is COMPLEX*16 array, dimension (NMAX*NMAX). 🌈
• BF — BF is COMPLEX*16 array, dimension (NMAX*NMAX). ⭐
• U — U is COMPLEX*16 array, dimension (NMAX*NMAX). 🧚
• V — V is COMPLEX*16 array, dimension (NMAX*NMAX). 🍓
• Q — Q is COMPLEX*16 array, dimension (NMAX*NMAX). 🦋
• ALPHA — ALPHA is DOUBLE PRECISION array, dimension (NMAX). 🌸
• BETA — BETA is DOUBLE PRECISION array, dimension (NMAX). ✨
• R — R is COMPLEX*16 array, dimension (NMAX*NMAX). 💅
• IWORK — IWORK is INTEGER array, dimension (NMAX). 👑
• WORK — WORK is COMPLEX*16 array, dimension (NMAX*NMAX). 🎀
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX). 🔥
• NIN — NIN is INTEGER. It's the unit number for input. 🫶
• NOUT — NOUT is INTEGER. It's the unit number for output. 💖
• INFO — INFO is INTEGER. Here's the breakdown:
  • = 0 : successful exit ✨
  • > 0 : If ZLATMS returns an error code, the absolute value of it is returned. 🚨

👑 Author 👑

The author list has main character energy:

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

📌 Definition at line 195 of file zckgsv.f. 📌

Yep, the page says exactly Definition at line 195 of file zckgsv.f. — that's the source location, iykyk. 📍

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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okay that's the whole page, bestie 💖 — this page ate, and it's brought to you by LAPACK Version 3.12.0 and the footer path /home/abui...IG/zckgsv.f(3) (no date in sight, periodt). ✨🫶