TESTING/LIN/ddrvgb.f(3)

🌸 NAME 🌸

TESTING/LIN/ddrvgb.f — yes bestie, that's the page title, and we're folding the manual-name energy in right here: this is from the LAPACK Library Functions Manual. It's the ddrvgb page, and we're about to get into the whole thing 💅.

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

Okay so the synopsis is giving subroutine ddrvgb plus the DDRVGB label, no cap:

subroutine ddrvgb (dotype, nn, nval, nrhs, thresh, tsterr, a, la, afb,
    lafb, asav, b, bsav, x, xact, s, work, rwork, iwork, nout)
    DDRVGB

🔥 Function/Subroutine Documentation 🔥

Here's the full signature, bestie — keep every type and every dimension( * ) exactly as written:

subroutine ddrvgb (logical, dimension( * ) dotype, integer nn, integer,
    dimension( * ) nval, integer nrhs, double precision thresh, logical
    tsterr, double precision, dimension( * ) a, integer la, double
    precision, dimension( * ) afb, integer lafb, double precision,
    dimension( * ) asav, double precision, dimension( * ) b, double
    precision, dimension( * ) bsav, double precision, dimension( * ) x,
    double precision, dimension( * ) xact, double precision, dimension( * )
    s, double precision, dimension( * ) work, double precision, dimension( *
    ) rwork, integer, dimension( * ) iwork, integer nout)
    DDRVGB

💖 Purpose 💖

DDRVGB tests the driver routines DGBSV and -SVX. That's the whole purpose, and it's iconic ✨.

🎀 Parameters 🎀

• DOTYPE — DOTYPE is LOGICAL array, dimension (NTYPES). It holds 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.
• 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.
• 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.
• A — A is DOUBLE PRECISION array, dimension (LA).
• LA — LA is INTEGER. The length of the array A. LA >= (2*NMAX-1)*NMAX where NMAX is the largest entry in NVAL.
• AFB — AFB is DOUBLE PRECISION array, dimension (LAFB).
• LAFB — LAFB is INTEGER. The length of the array AFB. LAFB >= (3*NMAX-2)*NMAX where NMAX is the largest entry in NVAL.
• ASAV — ASAV is DOUBLE PRECISION array, dimension (LA).
• B — B is DOUBLE PRECISION array, dimension (NMAX*NRHS).
• BSAV — BSAV 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).
• S — S is DOUBLE PRECISION array, dimension (2*NMAX).
• WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*max(3,NRHS,NMAX)).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX+2*NRHS).
• IWORK — IWORK is INTEGER array, dimension (2*NMAX).
• NOUT — NOUT is INTEGER. The unit number for output.

💌 Author 💌

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

Definition at line 169 of file ddrvgb.f.

🛠️ Author 🛠️

Generated automatically by Doxygen for LAPACK from the source code.

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Signed, sealed, and folded into this cute little sign-off instead of copy-pasting the footer line: LAPACK Version 3.12.0 — TESTING/LIN/ddrvgb.f(3) — that's the source/version energy, bestie. Go test those driver routines 💖✨🫶