ZCHKQR(3)

🦋 ZCHKQR(3) — Library Functions Manual 🦋

okay so bestie, this is the ZCHKQR(3) page from the Library Functions Manual, and it is very much giving “test-driver main character energy” 💅. It lives at the very long path below and tests ZGEQRF, ZUNGQR and ZUNMQR. No cap.

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✨ NAME ✨

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zchkqr.f — yep, that whole path is the NAME, bestie. Iconic in a chaotic way 🎀

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🌟 SYNOPSIS 🌟

subroutine ZCHKQR (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs,
    thresh, tsterr, nmax, a, af, aq, ar, ac, b, x, xact, tau, work,
    rwork, iwork, nout)
    ZCHKQR

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🫶 Functions/Subroutines 🫶

• subroutine ZCHKQR (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs, thresh, tsterr, nmax, a, af, aq, ar, ac, b, x, xact, tau, work, rwork, iwork, nout) — the whole subroutine, with every single argument in place 💖
• ZCHKQR — yes bestie, it’s also just listed as its own name. We love a self-referential moment ✨

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🌈 Function/Subroutine Documentation 🌈

subroutine ZCHKQR (logical, dimension( * ) dotype, integer nm, integer,
    dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer
    nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval,
    integer nrhs, double precision thresh, logical tsterr, integer nmax,
    complex*16, dimension( * ) a, complex*16, dimension( * ) af, complex*16,
    dimension( * ) aq, complex*16, dimension( * ) ar, complex*16, dimension(
    * ) ac, complex*16, dimension( * ) b, complex*16, dimension( * ) x,
    complex*16, dimension( * ) xact, complex*16, dimension( * ) tau,
    complex*16, dimension( * ) work, double precision, dimension( * ) rwork,
    integer, dimension( * ) iwork, integer nout)
    ZCHKQR

💖 Purpose 💖

!> !> ZCHKQR tests ZGEQRF, ZUNGQR and ZUNMQR. !>

So yeah — it’s the test girlie for ZGEQRF, ZUNGQR and ZUNMQR. Periodt 🧚

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🎀 Parameters 🎀

• DOTYPE — LOGICAL array, dimension (NTYPES). The matrix types to be used for testing. Matrices of type j (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.
• NM — INTEGER. The number of values of M contained in the vector MVAL.
• MVAL — INTEGER array, dimension (NM). The values of the matrix row dimension M.
• NN — INTEGER. The number of values of N contained in the vector NVAL.
• NVAL — INTEGER array, dimension (NN). The values of the matrix column dimension N.
• NNB — INTEGER. The number of values of NB and NX contained in the vectors NBVAL and NXVAL. The blocking parameters are used in pairs (NB,NX).
• NBVAL — INTEGER array, dimension (NNB). The values of the blocksize NB.
• NXVAL — INTEGER array, dimension (NNB). The values of the crossover point NX.
• NRHS — INTEGER. The number of right hand side vectors to be generated for each linear system.
• THRESH — DOUBLE PRECISION. 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.
• TSTERR — LOGICAL. Flag that indicates whether error exits are to be tested.
• NMAX — INTEGER. The maximum value permitted for M or N, used in dimensioning the work arrays.
• A — COMPLEX*16 array, dimension (NMAX*NMAX).
• AF — COMPLEX*16 array, dimension (NMAX*NMAX).
• AQ — COMPLEX*16 array, dimension (NMAX*NMAX).
• AR — COMPLEX*16 array, dimension (NMAX*NMAX).
• AC — COMPLEX*16 array, dimension (NMAX*NMAX).
• B — COMPLEX*16 array, dimension (NMAX*NRHS).
• X — COMPLEX*16 array, dimension (NMAX*NRHS).
• XACT — COMPLEX*16 array, dimension (NMAX*NRHS).
• TAU — COMPLEX*16 array, dimension (NMAX).
• WORK — COMPLEX*16 array, dimension (NMAX*NMAX).
• RWORK — DOUBLE PRECISION array, dimension (NMAX).
• IWORK — INTEGER array, dimension (NMAX).
• NOUT — INTEGER. The unit number for output.

bestie, that is every parameter, every dimension, every type. Nothing skipped. We ate 💅

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👑 Author 👑

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

Definition at line 198 of file zchkqr.f.

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🌸 Author 🌸

Generated automatically by Doxygen for LAPACK from the source code.

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okay final sign-off, bestie: this page’s source/version vibe is LAPACK Version 3.12.0, and the footer file is /home/abui...IN/zchkqr.f(3). There’s no date printed on this page, so I’m not inventing one — fr fr. Bye bestie, go test those QR routines 💜✨