CCKGQR(3)

💖 CCKGQR(3) — Library Functions Manual 💖

okay bestie, welcome to the page for cckgqr.f(3) from the Library Functions Manual. It's a LAPACK test routine, and it's giving "I test factorizations for fun" energy. Let's go. 🫶

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/EIG/cckgqr.f

That's literally the name line, no cap: the file path is the star. 💅

✨ SYNOPSIS ✨

🌟 Functions/Subroutines 🌟

subroutine CCKGQR (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)
    CCKGQR

🦋 Function/Subroutine Documentation 🦋

Here's the full signature, fresh off the page:

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

💅 Purpose 💅

CCKGQR tests CGGQRF: GQR factorization for N-by-M matrix A and N-by-P matrix B, and CGGRQF: GRQ factorization for M-by-N matrix A and P-by-N matrix B. Periodt. 🔥

🎀 Parameters 🎀

• NM — NM is INTEGER. It's 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. It's 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. It's 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 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.
• NMAX — NMAX is INTEGER. The maximum value permitted for M or N, used in dimensioning the work arrays.
• A — A is COMPLEX array, dimension (NMAX*NMAX).
• AF — AF is COMPLEX array, dimension (NMAX*NMAX).
• AQ — AQ is COMPLEX array, dimension (NMAX*NMAX).
• AR — AR is COMPLEX array, dimension (NMAX*NMAX).
• TAUA — TAUA is COMPLEX array, dimension (NMAX).
• B — B is COMPLEX array, dimension (NMAX*NMAX).
• BF — BF is COMPLEX array, dimension (NMAX*NMAX).
• BZ — BZ is COMPLEX array, dimension (NMAX*NMAX).
• BT — BT is COMPLEX array, dimension (NMAX*NMAX).
• BWK — BWK is COMPLEX array, dimension (NMAX*NMAX).
• TAUB — TAUB is COMPLEX array, dimension (NMAX).
• WORK — WORK is COMPLEX array, dimension (NMAX*NMAX).
• RWORK — RWORK is REAL 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 CLATMS 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 208 of file cckgqr.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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💖 cute sign-off 💖 source is LAPACK, version 3.12.0, and the footer path is /home/abui...IG/cckgqr.f(3). The original footer doesn't print a date, so I'm not inventing one — no cap, bestie. 💅🎀