/home/abui...chksy_aa.f(3)

🌸 NAME 🌸

okay bestie, so this page is literally about cchksy_aa.f — like, the whole path is:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/cchksy_aa.f

and it's from the Library Functions Manual. she's giving very much "one file in a giant LAPACK testing folder" energy and honestly? iconic. 💅

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✨ SYNOPSIS ✨

🫶 Functions/Subroutines

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

she's called CCHKSY_AA and no cap, that's the whole name 🎀

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💖 Function/Subroutine Documentation 💖

here's the full signature, character for character, because we do not abbreviate:

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

and the name again, in case you forgot: CCHKSY_AA 🦋

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🎯 Purpose

CCHKSY_AA tests CSYTRF_AA, -TRS_AA.

that's it. that's the purpose. she's a tester, she tests those two, periodt. 🔥

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🧚 Parameters

okay this is the part where we go one by one and I hold your hand through it, bestie. every single one. let's go 👑

• DOTYPE — a LOGICAL array, dimension (NTYPES). this is literally the matrix types to be used for testing. matrices of type j (for 1 <= j <= NTYPES) get tested if DOTYPE(j) = .TRUE.; and if DOTYPE(j) = .FALSE., then type j is not used. simple as that 💁‍♀️
• NN — INTEGER. the number of values of N contained in the vector NVAL. she counts the N's.
• NVAL — INTEGER array, dimension (NN). the actual values of the matrix dimension N. the main characters, honestly.
• NNB — INTEGER. the number of values of NB contained in the vector NBVAL. yes, NB, not N — different girl, same vibe.
• NBVAL — INTEGER array, dimension (NNB). the values of the blocksize NB. blocksize representation matters ✨
• NNS — INTEGER. the number of values of NRHS contained in the vector NSVAL. the third and final count-vector situation, we made it 🫶
• NSVAL — INTEGER array, dimension (NNS). the values of the number of right hand sides NRHS. yes bestie, right hand sides, plural, she contains multitudes.
• THRESH — REAL. the threshold value for the test ratios. a result is included in the output file if RESULT >= THRESH. and if you want every test ratio printed, use THRESH = 0 👀 (no filter, no gatekeeping, we love a transparent queen)
• TSTERR — LOGICAL. a flag that indicates whether error exits are to be tested. TRUE = yes we're testing the error exits, obviously.
• NMAX — INTEGER. the maximum value permitted for N, used in dimensioning the work arrays. she's the ceiling, literally.
• A — REAL array, dimension (NMAX*NMAX). (that's what the doc says, REAL, and I'm just reporting the news 📰)
• AFAC — REAL array, dimension (NMAX*NMAX).
• AINV — REAL array, dimension (NMAX*NMAX).
• B — REAL array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL. she brought a friend 🎀
• X — REAL array, dimension (NMAX*NSMAX).
• XACT — REAL array, dimension (NMAX*NSMAX). x-act, like exact, get it? she's the accurate one. (no more x/y/z jokes I promise)
• WORK — REAL array, dimension (NMAX*max(3,NSMAX)). the max(3,NSMAX) is doing a lot of heavy lifting and we respect her.
• RWORK — REAL array, dimension (max(NMAX,2*NSMAX)). another max, she's flexible like that.
• IWORK — INTEGER array, dimension (2*NMAX). the integer bestie of the workspace crew 💜
• NOUT — INTEGER. the unit number for output. that's where the results go, that's the whole thing.

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👑 Author

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

four whole institutions on the credits, and every single one of them ate 🌈

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Definition at line 167 of file cchksy_aa.f.

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⭐ Author (yes, again)

Generated automatically by Doxygen for LAPACK from the source code. not a human, not a vibe curator, just Doxygen doing her thing 🤖💖

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okay that's the whole page!! sign-off time: this was LAPACK, Version 3.12.0, and the file is /home/abui...chksy_aa.f(3) — go forth and test those symmetric matrices, bestie, you're gonna slay 🦋💅✨