TESTING/EIG/cckgqr.f(3)

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💖 TESTING/EIG/cckgqr.f(3) 💖

okay bestie, welcome to the Library Functions Manual page for TESTING/EIG/cckgqr.f — yes, the whole filename is the name and she is iconic like that 💅. This is the cckgqr test routine, and we're gonna walk through it together, no cap. 🦋

✨ NAME ✨

TESTING/EIG/cckgqr.f — the test file for cckgqr, and honestly the name is giving “I live in the EIG folder and I test GQR/GRQ things.” 🎀

🌸 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 🫶

subroutine cckgqr — the main character 👑

Function signature, because she deserves a second entrance

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.
  • CGGRQF: GRQ factorization for M-by-N matrix A and P-by-N matrix B.

periodt, that's the whole purpose section and it ate. 💜

🎀 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 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 💜

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okay bestie, that's the whole page 💋✨ — brought to you by LAPACK Version 3.12.0, and the footer-date vibe is TESTING/EIG/cckgqr.f(3). periodt. 🎀

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