ZCHKTB(3)

🎀 ZCHKTB(3) — Library Functions Manual 🎀

okay so bestie, this is the ZCHKTB(3) page from the Library Functions Manual — header path energy is /home/abui...IN/zchktb.f(3), and we are about to get into the LAPACK testing subroutine of it all ✨💅.

🌸 NAME 🌸

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

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

       subroutine ZCHKTB (dotype, nn, nval, nns, nsval, thresh, tsterr, nmax,
           ab, ainv, b, x, xact, work, rwork, nout)
           ZCHKTB

🫶 Function/Subroutine Documentation 🫶

       subroutine ZCHKTB (logical, dimension( * ) dotype, integer nn, integer,
           dimension( * ) nval, integer nns, integer, dimension( * ) nsval, double
           precision thresh, logical tsterr, integer nmax, complex*16, dimension( *
           ) ab, 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)
           ZCHKTB

💖 Purpose 💖

okay so the purpose is literally this: ZCHKTB tests ZTBTRS, -RFS, and -CON, and ZLATBS. That's the assignment, no cap 🔥.

🍓 Parameters 🍓

• DOTYPE — this is a LOGICAL array with dimension (NTYPES). It's the matrix-type lineup: 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.
• 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.
• 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. If you want every test ratio printed, use THRESH = 0.
• TSTERR — TSTERR is LOGICAL. It's a flag that indicates whether error exits are to be tested.
• NMAX — NMAX is INTEGER. It's the leading dimension of the work arrays. NMAX >= the maximum value of N in NVAL.
• AB — AB is COMPLEX*16 array, dimension (NMAX*NMAX).
• AINV — AINV is COMPLEX*16 array, dimension (NMAX*NMAX).
• B — B is COMPLEX*16 array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL.
• X — X is COMPLEX*16 array, dimension (NMAX*NSMAX).
• XACT — XACT is COMPLEX*16 array, dimension (NMAX*NSMAX).
• WORK — WORK is COMPLEX*16 array, dimension (NMAX*max(3,NSMAX)).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (max(NMAX,2*NSMAX)).
• NOUT — NOUT is INTEGER. It's the unit number for output.

📜 Author 📜

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

Definition at line 147 of file zchktb.f.

📜 Author 📜

Generated automatically by Doxygen for LAPACK from the source code.

---

okay bestie, that's the whole page 💖. Footer vibe check: LAPACK Version 3.12.0, with the path /home/abui...IN/zchktb.f(3) — the date slot is not shown in this footer, so that's the cute sign-off. Periodt 🎀✨