DCHKGB(3)

💅 NAME 💅

Bestie, this is the manual page for dchkgb.f(3) — the Library Functions Manual entry for /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/dchkgb.f. It’s giving “I test banded matrix routines” energy, and honestly? Iconic. 🎀

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🌈 SYNOPSIS 🌈

✨ Functions/Subroutines ✨

       subroutine DCHKGB (dotype, nm, mval, nn, nval, nnb, nbval, nns, nsval,
           thresh, tsterr, a, la, afac, lafac, b, x, xact, work, rwork, iwork,
           nout)
           DCHKGB

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🦋 Function/Subroutine Documentation 🦋

🎀 subroutine DCHKGB 🎀

   subroutine DCHKGB (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, double precision,
       dimension( * ) a, integer la, double precision, dimension( * ) afac,
       integer lafac, 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)
       DCHKGB

🎯 Purpose 🎯

Ok so DCHKGB tests DGBTRF, -TRS, -RFS, and -CON. That’s the whole purpose, no cap. 💅

🧸 Parameters 🧸

DOTYPE

DOTYPE is LOGICAL array, dimension (NTYPES). It’s 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. Slay, selective testing. ✨

NM

NM is INTEGER. It’s the number of values of M contained in the vector MVAL.

MVAL

MVAL is INTEGER array, dimension (NM). These are the values of the matrix row dimension M. Main character dimension energy. 👑

NN

NN is INTEGER. It’s the number of values of N contained in the vector NVAL.

NVAL

NVAL is INTEGER array, dimension (NN). These are the values of the matrix column dimension N.

NNB

NNB is INTEGER. It’s the number of values of NB contained in the vector NBVAL.

NBVAL

NBVAL is INTEGER array, dimension (NNB). These are the values of the blocksize NB. Block it out, bestie. 🧚

NNS

NNS is INTEGER. It’s the number of values of NRHS contained in the vector NSVAL.

NSVAL

NSVAL is INTEGER array, dimension (NNS). These are the values of the number of right hand sides NRHS.

THRESH

THRESH is DOUBLE PRECISION. It’s 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. Literally all the receipts. 🧾

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. It’s the length of the array A. LA >= (KLMAX+KUMAX+1)*NMAX where KLMAX is the largest entry in the local array KLVAL, KUMAX is the largest entry in the local array KUVAL, and NMAX is the largest entry in the input array NVAL. Respect the size math. 🔥

AFAC

AFAC is DOUBLE PRECISION array, dimension (LAFAC).

LAFAC

LAFAC is INTEGER. It’s the length of the array AFAC. LAFAC >= (2*KLMAX+KUMAX+1)*NMAX where KLMAX is the largest entry in the local array KLVAL, KUMAX is the largest entry in the local array KUVAL, and NMAX is the largest entry in the input array NVAL.

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,NMAX)).

RWORK

RWORK is DOUBLE PRECISION array, dimension (NMAX+2*NSMAX).

IWORK

IWORK is INTEGER array, dimension (2*NMAX).

NOUT

NOUT is INTEGER. It’s the unit number for output. Tell it where to spill the tea. ☕

👑 Author 👑

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

📍 Definition at line 188 of file dchkgb.f 📍

🪄 Author 🪄

Generated automatically by Doxygen for LAPACK from the source code.

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Catch you later, bestie 💖 — this page is from LAPACK Version 3.12.0, and the footer path is /home/abui...IN/dchkgb.f(3). Periodt. 🫶