DDRVGB(3)

🎀 NAME 🎀

Bestie, this page is for DDRVGB(3) from the Library Functions Manual 💖. The file it lives in is:

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

That's the whole NAME vibe — iconic path, no notes ✨.

✨ SYNOPSIS ✨

Functions/Subroutines

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 🦋

Okay so here's the full signature with every type and dimension, no cap — don't lose any of it, fr fr:

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

okay so the whole main-character job: DDRVGB tests the driver routines DGBSV and -SVX. That's the purpose, periodt 💅.

🔥 Parameters

Every parameter, bestie, in order — no skips:

• 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.
• 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

And the bottom Author moment says, literally: Generated automatically by Doxygen for LAPACK from the source code. 💅

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xoxo, bestie 🫶 — the footer's source/version is LAPACK Version 3.12.0, and the footer path is /home/abui...IN/ddrvgb.f(3). periodt.