TESTING/LIN/schkql.f(3)

💖 NAME

okay bestie, this is the TESTING/LIN/schkql.f(3) page from the Library Functions Manual — the file itself is TESTING/LIN/schkql.f. ✨

✨ SYNOPSIS

🛠️ Functions/Subroutines

       subroutine schkql (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs,
           thresh, tsterr, nmax, a, af, aq, al, ac, b, x, xact, tau, work,
           rwork, nout)
           SCHKQL

🫶 Function/Subroutine Documentation

   subroutine schkql (logical, dimension( * ) dotype, integer nm, integer,
       dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer
       nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval,
       integer nrhs, real thresh, logical tsterr, integer nmax, real,
       dimension( * ) a, real, dimension( * ) af, real, dimension( * ) aq,
       real, dimension( * ) al, real, dimension( * ) ac, real, dimension( * )
       b, real, dimension( * ) x, real, dimension( * ) xact, real, dimension( *
       ) tau, real, dimension( * ) work, real, dimension( * ) rwork, integer
       nout)
       SCHKQL

🎯 Purpose

so like, SCHKQL tests SGEQLF, SORGQL and SORMQL. that’s the whole assignment. 💅

🌸 Parameters

• DOTYPE — it’s a LOGICAL array, dimension (NTYPES). these are the matrix types used for testing. for matrix type j where 1 <= j <= NTYPES: it gets tested if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used. periodt.
• 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.
• 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 and NX contained in the vectors NBVAL and NXVAL. the blocking parameters are used in pairs (NB,NX). iconic pairing tbh.
• NBVAL — NBVAL is INTEGER array, dimension (NNB). these are the values of the blocksize NB.
• NXVAL — NXVAL is INTEGER array, dimension (NNB). these are the values of the crossover point NX.
• NRHS — NRHS is INTEGER. it’s the number of right hand side vectors to be generated for each linear system.
• THRESH — THRESH is REAL. 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. no skipping, bestie.
• TSTERR — TSTERR is LOGICAL. flag that indicates whether error exits are to be tested.
• NMAX — NMAX is INTEGER. the maximum value permitted for M or N, used in dimensioning the work arrays.
• A — A is REAL array, dimension (NMAX*NMAX).
• AF — AF is REAL array, dimension (NMAX*NMAX).
• AQ — AQ is REAL array, dimension (NMAX*NMAX).
• AL — AL is REAL array, dimension (NMAX*NMAX).
• AC — AC is REAL array, dimension (NMAX*NMAX).
• B — B is REAL array, dimension (NMAX*NRHS).
• X — X is REAL array, dimension (NMAX*NRHS).
• XACT — XACT is REAL array, dimension (NMAX*NRHS).
• TAU — TAU is REAL array, dimension (NMAX).
• WORK — WORK is REAL array, dimension (NMAX*NMAX).
• RWORK — RWORK is REAL 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 193 of file schkql.f.

🧚 Author

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xoxo bestie 💖 this whole page is LAPACK Version 3.12.0, manual page TESTING/LIN/schkql.f(3). mwah 💅✨