TESTING/LIN/dchktb.f(3)

💖 NAME 💖

okay bestie, welcome to the Library Functions Manual page for TESTING/LIN/dchktb.f(3). The main character is dchktb / DCHKTB, and she is here to test things. periodt. 🫶

🎀 SYNOPSIS 🎀

🦋 Functions/Subroutines 🦋

Here is the synopsis exactly, because we do not play with signatures:

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

💅 Function/Subroutine Documentation 💅

👑 DCHKTB 👑

Full typed signature, verbatim:

   subroutine dchktb (logical, dimension( * ) dotype, integer nn, integer,
       dimension( * ) nval, integer nns, integer, dimension( * ) nsval, double
       precision thresh, logical tsterr, integer nmax, double precision,
       dimension( * ) ab, 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)
       DCHKTB

✨ Purpose ✨

DCHKTB tests DTBTRS, -RFS, and -CON, and DLATBS. That is the assignment, and she ate. 💅

🍓 Parameters 🍓

• DOTYPE (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 (INTEGER) — the number of values of N contained in the vector NVAL. 🦋
• NVAL (INTEGER array, dimension (NN)) — the values of the matrix column dimension N. 🌸
• NNS (INTEGER) — the number of values of NRHS contained in the vector NSVAL. 💫
• NSVAL (INTEGER array, dimension (NNS)) — the values of the number of right hand sides NRHS. 🎀
• THRESH (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 (LOGICAL) — flag that indicates whether error exits are to be tested. 🔥
• NMAX (INTEGER) — the leading dimension of the work arrays. NMAX >= the maximum value of N in NVAL. 🦋
• AB (DOUBLE PRECISION array, dimension (NMAX*NMAX)) — the array, bestie. That is the whole note. 💜
• AINV (DOUBLE PRECISION array, dimension (NMAX*NMAX)) — another DOUBLE PRECISION array with that exact dimension. 💖
• B (DOUBLE PRECISION array, dimension (NMAX*NSMAX)) — where NSMAX is the largest entry in NSVAL. 🌈
• X (DOUBLE PRECISION array, dimension (NMAX*NSMAX)) — same dimension energy. ⭐
• XACT (DOUBLE PRECISION array, dimension (NMAX*NSMAX)) — also DOUBLE PRECISION, also that dimension. 🎀
• WORK (DOUBLE PRECISION array, dimension (NMAX*max(3,NSMAX))) — work array, exact dimension right there. 🧚
• RWORK (DOUBLE PRECISION array, dimension (max(NMAX,2*NSMAX))) — real work array, exact dimension. 🍓
• IWORK (INTEGER array, dimension (NMAX)) — integer work array. 💅
• NOUT (INTEGER) — the unit number for output. 💌

🫶 Author 🫶

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

Definition at line 152 of file dchktb.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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okay bestie, that is the whole page. footer vibes are LAPACK Version 3.12.0 and the page is TESTING/LIN/dchktb.f(3) — no cap, that is the sign-off. 💜✨