TESTING/LIN/schktb.f(3)

🎀 TESTING/LIN/schktb.f — Library Functions Manual vibes 🎀

Okay bestie, this is the page for TESTING/LIN/schktb.f(3) from the Library Functions Manual. Yes, the title is also the manual name, we’re folding that in right here so it doesn’t have to do a whole header-line moment. 💅

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✨ NAME ✨

TESTING/LIN/schktb.f — that’s the name, no cap, not a typo, not a drill. 🫶

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🌸 SYNOPSIS 🌸

Functions/Subroutines

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

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💖 Function/Subroutine Documentation 💖

   subroutine schktb (logical, dimension( * ) dotype, integer nn, integer,
       dimension( * ) nval, integer nns, integer, dimension( * ) nsval, real
       thresh, logical tsterr, integer nmax, real, dimension( * ) ab, real,
       dimension( * ) ainv, real, dimension( * ) b, real, dimension( * ) x,
       real, dimension( * ) xact, real, dimension( * ) work, real, dimension( *
       ) rwork, integer, dimension( * ) iwork, integer nout)
       SCHKTB

🦋 Purpose 🦋

Okay so the whole point, literally: SCHKTB tests STBTRS, -RFS, and -CON, and SLATBS. That’s the vibe. ✨

🎀 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. 🍓
• 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.
• 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 REAL. 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 leading dimension of the work arrays. NMAX >= the maximum value of N in NVAL.
• AB — AB is REAL array, dimension (NMAX*NMAX).
• AINV — AINV is REAL array, dimension (NMAX*NMAX).
• B — B is REAL array, dimension (NMAX*NSMAX) where NSMAX is the largest entry in NSVAL.
• X — X is REAL array, dimension (NMAX*NSMAX).
• XACT — XACT is REAL array, dimension (NMAX*NSMAX).
• WORK — WORK is REAL array, dimension (NMAX*max(3,NSMAX)).
• RWORK — RWORK is REAL array, dimension (max(NMAX,2*NSMAX)).
• IWORK — IWORK is INTEGER array, dimension (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 ⭐

Definition at line 152 of file schktb.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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Cute sign-off time: this is LAPACK, Version 3.12.0, and the page is TESTING/LIN/schktb.f(3). Byeee, go slay those linear algebra tests 💖✨👑