ZCHKPB(3)

🎀 ZCHKPB(3) 🎀 — straight out of the Library Functions Manual 💅

okay so bestie, this one lives in the Library Functions Manual section 3 (yes, the (3) is right there in the title, mwah) ✨

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🌸 NAME 🌸

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

like... that's the whole name. that's the whole path. she's long, she's specific, she's that girl 🫶

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✨ SYNOPSIS ✨

Functions/Subroutines

subroutine ZCHKPB (dotype, nn, nval, nnb, nbval, nns, nsval, thresh,
    tsterr, nmax, a, afac, ainv, b, x, xact, work, rwork, nout)

ZCHKPB

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🦋 Function/Subroutine Documentation 🦋

subroutine ZCHKPB (logical, dimension( * ) dotype, integer nn, integer,
    dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer
    nns, integer, dimension( * ) nsval, double precision thresh, logical
    tsterr, integer nmax, complex*16, dimension( * ) a, complex*16, dimension(
    * ) afac, complex*16, dimension( * ) ainv, complex*16, dimension( * ) b,
    complex*16, dimension( * ) x, complex*16, dimension( * ) xact, complex*16,
    dimension( * ) work, double precision, dimension( * ) rwork, integer nout)

ZCHKPB

🌈 Purpose 🌈

!> !> ZCHKPB tests ZPBTRF, -TRS, -RFS, and -CON. !>

no cap, that's literally the whole purpose. she tests four routines and she does it fabulously 💖

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💜 Parameters 💜

• 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.

so it's a lil yes/no switch for every single matrix type, and honestly? iconic behaviour 👑

• 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 dimension N.

this is the lineup of sizes she's gonna try on. fashion show for matrices fr fr 🎀

• 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.

🫶 reminder from the page itself: if you want every single test ratio printed, THRESH = 0. that's the full-send setting, bestie.

• TSTERR — TSTERR is LOGICAL

Flag that indicates whether error exits are to be tested.

• NMAX — NMAX is INTEGER

The maximum value permitted for N, used in dimensioning the work arrays.

she's the ceiling. she's the limit. she's the reason your arrays are that big 💀

• 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(NMAX,2*NSMAX))
• NOUT — NOUT is INTEGER

The unit number for output.

that's where all the gossip gets printed 💅

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⭐ Author ⭐

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

💖 Definition at line 165 of file zchkpb.f.

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👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code. not me being a whole auto-generated queen ✨

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and that's the whole page, bestie — nothing skipped, nothing dropped, every array, every dimension, every NMAX*NSMAX exactly where it belongs 🧚

LAPACK — Version 3.12.0 · dated /home/abui...IN/zchkpb.f(3) — mwah, bye, slay 💜