TESTING/EIG/dget38.f(3)

💅 NAME 💅

TESTING/EIG/dget38.f — from the Library Functions Manual, bestie. This is the page for dget38, and we're gonna read it together like it's the most iconic group-chat lore ever. 💖

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

• subroutine dget38 (rmax, lmax, ninfo, knt, nin) — DGET38

🌸 Function/Subroutine Documentation 🌸

subroutine dget38 (double precision, dimension( 3 ) rmax, integer,
    dimension( 3 ) lmax, integer, dimension( 3 ) ninfo, integer knt, integer
    nin)
    DGET38

🎯 Purpose 🎯

Okay so DGET38 tests DTRSEN, a routine for estimating condition numbers of a cluster of eigenvalues and/or its associated right invariant subspace. Obsessed. ✨

The test matrices are read from a file with logical unit number NIN. Slay. 💅

💖 Parameters 💖

• RMAX — RMAX is a DOUBLE PRECISION array, dimension (3). These are the values of the largest test ratios, and the breakdown is everything:
  • RMAX(1) = largest residuals from DHST01 or comparing different calls to DTRSEN
  • RMAX(2) = largest error in reciprocal condition numbers taking their conditioning into account
  • RMAX(3) = largest error in reciprocal condition numbers not taking their conditioning into account (may be larger than RMAX(2))
• LMAX — LMAX is an INTEGER array, dimension (3). LMAX(i) is example number where largest test ratio RMAX(i) is achieved. Also:
  • If DGEHRD returns INFO nonzero on example i, LMAX(1)=i
  • If DHSEQR returns INFO nonzero on example i, LMAX(2)=i
  • If DTRSEN returns INFO nonzero on example i, LMAX(3)=i
• NINFO — NINFO is an INTEGER array, dimension (3).
  • NINFO(1) = No. of times DGEHRD returned INFO nonzero
  • NINFO(2) = No. of times DHSEQR returned INFO nonzero
  • NINFO(3) = No. of times DTRSEN returned INFO nonzero
• KNT — KNT is an INTEGER. Total number of examples tested. 🎀
• NIN — NIN is an INTEGER. Input logical unit number. 🦋

👑 Author 👑

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

Definition at line 90 of file dget38.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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Cute sign-off, bestie: source/version is LAPACK Version 3.12.0, footer page is TESTING/EIG/dget38.f(3), and the date? The footer didn't list one — so no fake date from me, periodt. 🫶💜