TESTING/EIG/zckgqr.f(3)

✨ TESTING/EIG/zckgqr.f ✨

okay bestie, you're looking at the TESTING/EIG/zckgqr.f(3) page from the Library Functions Manual. It's giving LAPACK test-routine main character energy, and we're gonna go through every single detail together. no cap. 💅

💖 NAME 💖

TESTING/EIG/zckgqr.f — yes, that's the whole name, and it's iconic.

🦋 SYNOPSIS 🦋

🎀 Functions/Subroutines 🎀

   subroutine zckgqr (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)
           ZCKGQR

That's the synopsis, periodt. The subroutine is zckgqr, and it also answers to ZCKGQR.

🌸 Function/Subroutine Documentation 🌸

👑 subroutine zckgqr 👑

   subroutine zckgqr (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, complex*16, dimension( * ) a, complex*16, dimension( * )
       af, complex*16, dimension( * ) aq, complex*16, dimension( * ) ar,
       complex*16, dimension( * ) taua, complex*16, dimension( * ) b,
       complex*16, dimension( * ) bf, complex*16, dimension( * ) bz,
       complex*16, dimension( * ) bt, complex*16, dimension( * ) bwk,
       complex*16, dimension( * ) taub, complex*16, dimension( * ) work, double
       precision, dimension( * ) rwork, integer nin, integer nout, integer
       info)
       ZCKGQR

🧚 Purpose 🧚

Bestie, the Purpose is literally this:

ZCKGQR tests ZGGQRF: GQR factorization for N-by-M matrix A and N-by-P matrix B, ZGGRQF: 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 COMPLEX*16 array, dimension (NMAX*NMAX). That's the whole parameter, bestie.
• AF — AF is COMPLEX*16 array, dimension (NMAX*NMAX). Again, that's it.
• AQ — AQ is COMPLEX*16 array, dimension (NMAX*NMAX). No extra lore.
• AR — AR is COMPLEX*16 array, dimension (NMAX*NMAX). Just vibes and storage.
• TAUA — TAUA is COMPLEX*16 array, dimension (NMAX). Short and sweet.
• B — B is COMPLEX*16 array, dimension (NMAX*NMAX). That's the parameter.
• BF — BF is COMPLEX*16 array, dimension (NMAX*NMAX). Periodt.
• BZ — BZ is COMPLEX*16 array, dimension (NMAX*NMAX). Literally just this.
• BT — BT is COMPLEX*16 array, dimension (NMAX*NMAX). That's the whole description.
• BWK — BWK is COMPLEX*16 array, dimension (NMAX*NMAX). Iconic, no notes.
• TAUB — TAUB is COMPLEX*16 array, dimension (NMAX). That's it.
• WORK — WORK is COMPLEX*16 array, dimension (NMAX*NMAX). Work it, bestie.
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX). That's the parameter.
• 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 ZLATMS 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 zckgqr.f. — yes, that's the exact line.

🧚 Author (the Doxygen one) 🧚

Generated automatically by Doxygen for LAPACK from the source code.

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Okay bestie, that's the whole page. The footer tea is: source/version is LAPACK Version 3.12.0, page is TESTING/EIG/zckgqr.f(3), and there's no date printed in the footer — so this cute sign-off is the end. 💖✨🫶