TESTING/EIG/dckgsv.f(3)

🌸 NAME 🌸

okay so this is TESTING/EIG/dckgsv.f, straight out of the Library Functions Manual — yes bestie, this whole page is the glow-up for one Fortran test routine.

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

subroutine dckgsv (nm, mval, pval, nval, nmats, iseed, thresh, nmax, a,
    af, b, bf, u, v, q, alpha, beta, r, iwork, work, rwork, nin, nout,
    info)
DCKGSV

DCKGSV is here to serve, periodt. 💅

👑 Function/Subroutine Documentation 👑

💫 subroutine dckgsv

subroutine dckgsv (integer nm, integer, dimension( * ) mval, integer,
    dimension( * ) pval, 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( * ) b, double precision, dimension( * ) bf,
    double precision, dimension( * ) u, double precision, dimension( * ) v,
    double precision, dimension( * ) q, double precision, dimension( * )
    alpha, double precision, dimension( * ) beta, double precision,
    dimension( * ) r, integer, dimension( * ) iwork, double precision,
    dimension( * ) work, double precision, dimension( * ) rwork, integer
    nin, integer nout, integer info)
DCKGSV

DCKGSV — main character energy, but make it a test routine. ✨

🎀 Purpose:

okay so purpose, fr: DCKGSV tests DGGSVD — the GSVD for M-by-N matrix A and P-by-N matrix B. That’s the whole assignment, bestie. 🦋

💖 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 dimension M.
• PVAL — PVAL is INTEGER array, dimension (NP). The values of the matrix row dimension P.
• NVAL — NVAL is INTEGER array, dimension (NN). The values of the matrix column 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).
• B — B is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• BF — BF is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• U — U is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• V — V is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• Q — Q is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• ALPHA — ALPHA is DOUBLE PRECISION array, dimension (NMAX).
• BETA — BETA is DOUBLE PRECISION array, dimension (NMAX).
• R — R is DOUBLE PRECISION array, dimension (NMAX*NMAX).
• IWORK — IWORK is INTEGER 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 195 of file dckgsv.f.

🌈 Author 🌈

The page says: Generated automatically by Doxygen for LAPACK from the source code. Slay, automated icon behavior. 🫶

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okay bye bestie 💖 the source/version footer at the very bottom is LAPACK, Version 3.12.0, for TESTING/EIG/dckgsv.f(3) — no separate date appears in that footer line, just that version, periodt. 👑