ZCHKSY_AA_2STAGE(3)

🦋 ZCHKSY_AA_2STAGE(3) 💅

okay so bestie, this one lives in the Library Functions Manual, and the file path is a whole journey — it's literally /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zchksy_aa_2stage.f ✨ like, that's the whole address, we're not abbreviating it, we're not editing it, we respect it 💖

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✨ NAME ✨

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zchksy_aa_2stage.f — that's the file, that's the name, and yes it's giving "full legal name on the birth certificate" energy 🎀

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🌸 SYNOPSIS 🌸

Functions/Subroutines

subroutine ZCHKSY_AA_2STAGE (dotype, nn, nval, nnb, nbval, nns, nsval,
    thresh, tsterr, nmax, a, afac, ainv, b, x, xact, work, rwork, iwork,
    nout)

ZCHKSY_AA_2STAGE — the icon, the moment, the subroutine 🫶

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👑 Function/Subroutine Documentation 👑

subroutine ZCHKSY_AA_2STAGE (logical, dimension( * ) dotype, integer nn,
    integer, dimension( * ) nval, integer nnb, integer, dimension( * )
    nbval, integer nns, integer, dimension( * ) nsval, double precision
    thresh, logical tsterr, integer nmax, complex*16, dimension( * ) a,
    complex*16, dimension( * ) afac, complex*16, dimension( * ) ainv,
    complex*16, dimension( * ) b, complex*16, dimension( * ) x, complex*16,
    dimension( * ) xact, complex*16, dimension( * ) work, double precision,
    dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

ZCHKSY_AA_2STAGE — yeah, that's the signature, take it all in, it's a lot but we love her 💀

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Purpose 🎯

!>
!> ZCHKSY_AA_2STAGE tests ZSYTRF_AA_2STAGE, -TRS_AA_2STAGE.
!>

so like, straight up: this girl's job is testing ZSYTRF_AA_2STAGE and -TRS_AA_2STAGE. that's the whole gig. main character energy, no notes 💅

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Parameters 🧚

okay this is the long part but we're doing all of them, no skipping, I promise 🍓

• DOTYPE — DOTYPE is LOGICAL array, dimension (NTYPES). so listen 👂: these are the matrix types used for testing. matrices of type j (for 1 <= j <= NTYPES) get tested if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is literally not used. like not invited to the party 🙈
• NN — NN is INTEGER. it's the number of values of N contained in the vector NVAL. counting queen 👑
• NVAL — NVAL is INTEGER array, dimension (NN). these are the values of the matrix dimension N. the actual sizes, bestie 🌈
• NNB — NNB is INTEGER. the number of values of NB contained in the vector NBVAL. another count, another slay ⭐
• NBVAL — NBVAL is INTEGER array, dimension (NNB). the values of the blocksize NB. block party 🎀
• NNS — NNS is INTEGER. the number of values of NRHS contained in the vector NSVAL. third counter, still iconic 🔥
• NSVAL — NSVAL is INTEGER array, dimension (NNS). the values of the number of right hand sides NRHS. right hand sides, we love them 🫶
• THRESH — THRESH is DOUBLE PRECISION. the threshold value for the test ratios. here's the rule: a result gets included in the output file if RESULT >= THRESH. and if you want EVERY test ratio printed, use THRESH = 0 — no cap, that's the move 💖
• TSTERR — TSTERR is LOGICAL. flag that indicates whether error exits are to be tested. are we testing the error paths? this flag says yes or no 😭
• NMAX — NMAX is INTEGER. the maximum value permitted for N, used in dimensioning the work arrays. she's the ceiling, the limit, the size-giver 💀
• A — A is COMPLEX*16 array, dimension (NMAX*NMAX). that's it, that's the whole description, dimension (NMAX*NMAX) 💜
• AFAC — AFAC is COMPLEX*16 array, dimension (NMAX*NMAX). the factored one, same dimensions, still COMPLEX*16 ✨
• AINV — AINV is COMPLEX*16 array, dimension (NMAX*NMAX). the inverse one, NMAX*NMAX, COMPLEX*16, we stan 🌸
• B — B is COMPLEX*16 array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL. ok so NSMAX? she's defined right here, largest entry in NSVAL, don't come for her 🦋
• X — X is COMPLEX*16 array, dimension (NMAX*NSMAX). yep, same shape as B, COMPLEX*16 💅
• XACT — XACT is COMPLEX*16 array, dimension (NMAX*NSMAX). the exact one, COMPLEX*16, NMAX*NSMAX, periodt 🌟
• WORK — WORK is COMPLEX*16 array, dimension (NMAX*max(3,NSMAX)). note the max(3,NSMAX) — that's max of 3 and NSMAX, not a typo, we read it right the first time 👀
• RWORK — RWORK is COMPLEX*16 array, dimension (max(NMAX,2*NSMAX)). and yes, the doc literally says COMPLEX*16 for RWORK, dimension (max(NMAX,2*NSMAX)). I'm reporting exactly what it says, don't @ me 😭
• IWORK — IWORK is INTEGER array, dimension (2*NMAX). integers, 2*NMAX, done 💖
• NOUT — NOUT is INTEGER. the unit number for output. that's where the printing goes 📠

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Author ✍️

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

the whole squad, credited, as they should be 👑💜

Definition at line 169 of file zchksy_aa_2stage.f. — line one-six-nine, remember it, there will be a quiz (there will not be a quiz) 🎀

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Author (again, but generated) 🤖

Generated automatically by Doxygen for LAPACK from the source code. — yes bestie, a robot wrote this one, and honestly? she ate 🌈

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aaaand that's the page!! 🦋 this was LAPACK, Version 3.12.0, and the footer path was /home/abui...aa_2stage.f(3) — mwah, go test those ZSYTRF_AA_2STAGE and -TRS_AA_2STAGE routines, ily, bye 💖💅✨