TESTING/LIN/dchkqr.f(3)

okay bestie, gather round: this is TESTING/LIN/dchkqr.f(3), and the manual it lives in is the Library Functions Manual. It’s giving “LAPACK test-driver main character energy” and I’m obsessed. 🫶

🌸 NAME 🌸

TESTING/LIN/dchkqr.f

✨ SYNOPSIS ✨

Functions/Subroutines

       subroutine dchkqr (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)
           DCHKQR

💅 Function/Subroutine Documentation 💅

   subroutine dchkqr (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)
       DCHKQR

🎯 Purpose 🎯

DCHKQR tests DGEQRF, DORGQR and DORMQR. periodt. 💖

🧸 Parameters 🧸

• DOTYPE — LOGICAL array, dimension (NTYPES). This is the matrix-type menu: 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. no cap.
• 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 — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AF — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AQ — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AR — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AC — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• B — DOUBLE PRECISION array, dimension (NMAX*NRHS).
• X — DOUBLE PRECISION array, dimension (NMAX*NRHS).
• XACT — DOUBLE PRECISION array, dimension (NMAX*NRHS).
• TAU — DOUBLE PRECISION array, dimension (NMAX).
• WORK — DOUBLE PRECISION array, dimension (NMAX*NMAX).
• RWORK — DOUBLE PRECISION array, dimension (NMAX).
• IWORK — INTEGER array, dimension (NMAX).
• NOUT — INTEGER. The unit number for output.

👑 Author 👑

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

Definition at line 198 of file dchkqr.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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that’s the whole vibe, bestie: LAPACK Version 3.12.0, page TESTING/LIN/dchkqr.f(3). mwah 💋✨