TESTING/EIG/dckgqr.f(3)

okay so bestie, welcome to the TESTING/EIG/dckgqr.f page from the Library Functions Manual — yes, the name is literally the source file path, and we’re talking about the dckgqr routine here. It’s giving very specific LAPACK testing energy, and we’re gonna get through every detail together. 💖

🌸 NAME 🌸

TESTING/EIG/dckgqr.f — the dckgqr test routine page, and that’s the whole name, periodt.

💅 SYNOPSIS 💅

✨ Functions/Subroutines ✨

   subroutine dckgqr (nm, mval, np, pval, nn, nval, nmats, iseed, thresh,
       nmax, a, af, aq, ar, taua, b, bf, bz, bt, bwk, taub, work, rwork,
       nin, nout, info)
       DCKGQR

✨ Function/Subroutine Documentation ✨

🫶 subroutine dckgqr 🫶

   subroutine dckgqr (integer nm, integer, dimension( * ) mval, integer np,
       integer, dimension( * ) pval, integer nn, integer, dimension( * ) nval,
       integer nmats, integer, dimension( 4 ) iseed, double precision thresh,
       integer nmax, double precision, dimension( * ) a, double precision,
       dimension( * ) af, double precision, dimension( * ) aq, double
       precision, dimension( * ) ar, double precision, dimension( * ) taua,
       double precision, dimension( * ) b, double precision, dimension( * ) bf,
       double precision, dimension( * ) bz, double precision, dimension( * )
       bt, double precision, dimension( * ) bwk, double precision, dimension( *
       ) taub, double precision, dimension( * ) work, double precision,
       dimension( * ) rwork, integer nin, integer nout, integer info)
       DCKGQR

🌟 Purpose 🌟

DCKGQR tests DGGQRF: GQR factorization for N-by-M matrix A and N-by-P matrix B, and DGGRQF: GRQ factorization for M-by-N matrix A and P-by-N matrix B.

🎀 Parameters 🎀

• NM — NM is INTEGER; the number of values of M contained in the vector MVAL.
• MVAL — MVAL is INTEGER array, dimension (NM); the values of the matrix row(column) dimension M.
• NP — NP is INTEGER; the number of values of P contained in the vector PVAL.
• PVAL — PVAL is INTEGER array, dimension (NP); the values of the matrix row(column) dimension P.
• 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(row) dimension N.
• NMATS — NMATS is INTEGER; the number of matrix types to be tested for each combination of matrix dimensions. If NMATS >= NTYPES (the maximum number of matrix types), then all the different types are generated for testing. If NMATS < NTYPES, another input line is read to get the numbers of the matrix types to be used.
• ISEED — ISEED is INTEGER array, dimension (4). On entry, the seed of the random number generator. The array elements should be between 0 and 4095, otherwise they will be reduced mod 4096, and ISEED(4) must be odd. On exit, the next seed in the random number sequence after all the test matrices have been generated.
• 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.
• NMAX — NMAX is INTEGER; the maximum value permitted for M or N, used in dimensioning the work arrays.
• A — A is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AF — AF is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AQ — AQ is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• AR — AR is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• TAUA — TAUA is DOUBLE PRECISION array, dimension (NMAX).
• B — B is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• BF — BF is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• BZ — BZ is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• BT — BT is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• BWK — BWK is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• TAUB — TAUB is DOUBLE PRECISION array, dimension (NMAX).
• WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX).
• NIN — NIN is INTEGER; the unit number for input.
• NOUT — NOUT is INTEGER; the unit number for output.
• INFO — INFO is INTEGER; = 0 : successful exit; > 0 : If DLATMS returns an error code, the absolute value of it is returned.

💜 Author 💜

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

Definition at line 207 of file dckgqr.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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Bye bestie! This page is from LAPACK, Version 3.12.0, and its file tag is TESTING/EIG/dckgqr.f(3). The footer doesn’t list a date, so I’m not making one up — periodt. 💅✨