DCHKRQ(3)

💅 NAME 💅

okay so this is the dchkrq.f(3) page from the Library Functions Manual, and the file at the center of the universe is literally /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/dchkrq.f. no cap, that's the whole NAME moment. 🫶

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🦋 SYNOPSIS 🦋

🎀 Functions/Subroutines 🎀

here's the function/subroutine synopsis, copied exactly so you can trust it:

       subroutine DCHKRQ (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)
           DCHKRQ

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💖 Function/Subroutine Documentation 💖

this is the full DCHKRQ signature, and yes it's a whole lot. every type, every dimension, every * stays exactly where it belongs:

   subroutine DCHKRQ (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,
       double precision, dimension( * ) a, double precision, dimension( * ) af,
       double precision, dimension( * ) aq, double precision, dimension( * )
       ar, double precision, dimension( * ) ac, double precision, dimension( *
       ) b, double precision, dimension( * ) x, double precision, dimension( *
       ) xact, double precision, dimension( * ) tau, double precision,
       dimension( * ) work, double precision, dimension( * ) rwork, integer,
       dimension( * ) iwork, integer nout)
       DCHKRQ

🌸 Purpose 🌸

the purpose tea is short and iconic: DCHKRQ tests DGERQF, DORGRQ and DORMRQ. that's it, that's the mission. 💅

🍓 Parameters 🍓

okay bestie, parameter speed-run, but nobody gets left out:

• DOTYPE — DOTYPE is 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 — NM is INTEGER. The number of values of M contained in the vector MVAL.
• MVAL — MVAL is INTEGER array, dimension (NM). The values of the matrix row dimension M.
• NN — NN is INTEGER. The number of values of N contained in the vector NVAL.
• NVAL — NVAL is INTEGER array, dimension (NN). The values of the matrix column dimension N.
• NNB — NNB is 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 — NBVAL is INTEGER array, dimension (NNB). The values of the blocksize NB.
• NXVAL — NXVAL is INTEGER array, dimension (NNB). The values of the crossover point NX.
• NRHS — NRHS is INTEGER. The number of right hand side vectors to be generated for each linear system.
• THRESH — THRESH is 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 — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested.
• NMAX — NMAX is INTEGER. The maximum value permitted for M or N, used in dimensioning the work arrays.
• A — A is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AF — AF is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AQ — AQ is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AR — AR is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AC — AC is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• B — B is DOUBLE PRECISION array, dimension (NMAX*NRHS).
• X — X is DOUBLE PRECISION array, dimension (NMAX*NRHS).
• XACT — XACT is DOUBLE PRECISION array, dimension (NMAX*NRHS).
• TAU — TAU is DOUBLE PRECISION array, dimension (NMAX).
• WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX).
• IWORK — IWORK is INTEGER array, dimension (NMAX).
• NOUT — NOUT is INTEGER. The unit number for output.

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👑 Author 👑

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

Definition at line 198 of file dchkrq.f.

🫶 Author 🫶

Generated automatically by Doxygen for LAPACK from the source code. 💻✨

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okay that's the whole page, bestie. signed with love by LAPACK Version 3.12.0, straight from /home/abui...IN/dchkrq.f(3) — and yeah, no date printed in this footer, just that version/path energy. 💖✨