TESTING/LIN/dchkge.f(3)

okay bestie, this is the TESTING/LIN/dchkge.f(3) page from the LAPACK Library Functions Manual, and it's giving “big Fortran test-driver energy” 💅✨

🌸 NAME 🌸

TESTING/LIN/dchkge.f

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine dchkge (dotype, nm, mval, nn, nval, nnb, nbval, nns, nsval,
    thresh, tsterr, nmax, a, afac, ainv, b, x, xact, work, rwork, iwork,
    nout)
    DCHKGE

💅 Function/Subroutine Documentation 💅

subroutine dchkge (logical, dimension( * ) dotype, integer nm, integer,
     dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer
     nnb, integer, dimension( * ) nbval, integer nns, integer, dimension( * )
     nsval, double precision thresh, logical tsterr, integer nmax, double
     precision, dimension( * ) a, double precision, dimension( * ) afac,
     double precision, dimension( * ) ainv, double precision, dimension( * )
     b, double precision, dimension( * ) x, double precision, dimension( * )
     xact, double precision, dimension( * ) work, double precision,
     dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)
     DCHKGE

🎯 Purpose 🎯

okay so the whole point, no cap: DCHKGE tests DGETRF, -TRI, -TRS, -RFS, and -CON. that's the assignment, bestie 💖

📋 Parameters 📋

every single arg, in order, because we do not skip the “boring” parts here 🫶

• DOTYPE — DOTYPE is LOGICAL array, dimension (NTYPES). these are 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 contained in the vector NBVAL.
• NBVAL — NBVAL is INTEGER array, dimension (NNB). the values of the blocksize NB.
• NNS — NNS is INTEGER. the number of values of NRHS contained in the vector NSVAL.
• NSVAL — NSVAL is INTEGER array, dimension (NNS). the values of the number of right hand sides NRHS.
• 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).
• AFAC — AFAC is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AINV — AINV is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• B — B is DOUBLE PRECISION array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL.
• X — X is DOUBLE PRECISION array, dimension (NMAX*NSMAX).
• XACT — XACT is DOUBLE PRECISION array, dimension (NMAX*NSMAX).
• WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*max(3,NSMAX)).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (max(2*NMAX,2*NSMAX+NWORK)).
• 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 182 of file dchkge.f.

🌈 Author 🌈

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okay that's the whole footer vibe, bestie: generated automatically by Doxygen for LAPACK from the source code, LAPACK Version 3.12.0, page TESTING/LIN/dchkge.f(3). the footer doesn't list a date, so no fake date from me 🙈. mwah 💋✨