TESTING/EIG/dget37.f(3)

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version 3.12.1 · 3 versions
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okay so bestie 💖 this is the Library Functions Manual page for TESTING/EIG/dget37.f — and the star of the show is a subroutine named DGET37. It’s giving “testing energy” and we’re gonna go through every single detail, no cap. 🦋

🌸 NAME 🌸

TESTING/EIG/dget37.f — periodt, that’s the name. 💅

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

  • subroutine dget37 (rmax, lmax, ninfo, knt, nin) — DGET37.

💅 Function/Subroutine Documentation 💅

Here’s the full signature, bestie:

subroutine dget37 (double precision, dimension( 3 ) rmax, integer,
     dimension( 3 ) lmax, integer, dimension( 3 ) ninfo, integer knt, integer
     nin)

DGET37

🎀 Purpose 🎀

DGET37 tests DTRSNA, a routine for estimating condition numbers of eigenvalues and/or right eigenvectors of a matrix. The test matrices are read from a file with logical unit number NIN. That’s the whole assignment. 👑

🍓 Parameters 🍓

  • RMAX — RMAX is DOUBLE PRECISION array, dimension (3). It’s the value of the largest test ratio.
    • RMAX(1) = largest ratio comparing different calls to DTRSNA
    • 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 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 DTRSNA returns INFO nonzero on example i, LMAX(3)=i
  • NINFO — NINFO is 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 DTRSNA returned INFO nonzero
  • KNT — KNT is INTEGER. Total number of examples tested.
  • NIN — NIN is INTEGER. Input logical unit number.

👑 Author 👑

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

⭐ Definition ⭐

Definition at line 89 of file dget37.f.

🌈 Author 🌈

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k bye bestie 🫶 that was the whole page. It came from LAPACK, Version 3.12.0, and the footer energy is TESTING/EIG/dget37.f(3). Slay and stay iconic. 💖✨

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