ZSLECT(3)

📦 version 3.12.0, in opensuse-leap 16.0

🌈 ZSLECT(3) 🌈

okay so this is the ZSLECT(3) page from the Library Functions Manual, bestie — manual-name situation folded in right here, no awkward header copy-paste ✨

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/EIG/zslect.f

that's the file this page is documenting, periodt 💅

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

logical function ZSLECT (z)
    ZSLECT

🎀 Function/Subroutine Documentation 🎀

logical function ZSLECT (complex*16 z)
    ZSLECT

💖 Purpose 💖

ZSLECT returns .TRUE. if the eigenvalue Z is to be selected, otherwise it returns .FALSE. no cap, that's the whole vibe check 🦋

It is used by ZCHK41 to test if ZGEES successfully sorts eigenvalues, and by ZCHK43 to test if ZGEESX successfully sorts eigenvalues. iconic testing-helper behavior, honestly 👑

The common block /SSLCT/ controls how eigenvalues are selected.

If SELOPT = 0, then ZSLECT returns .TRUE. when real(Z) is less than zero, and .FALSE. otherwise.

If SELOPT is at least 1, ZSLECT returns SELVAL(SELOPT) and adds 1 to SELOPT, cycling back to 1 at SELMAX. love a little cyclic selection moment 🌀

🦋 Parameters 🦋

  • Z — Z is COMPLEX*16. The eigenvalue Z. literally the eigenvalue in question, bestie 💖

🌼 Author 🌼

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

📍 Definition 📍

Definition at line 55 of file zslect.f.

👑 Author 👑

This top-level author note is literally: Generated automatically by Doxygen for LAPACK from the source code. slay, automation 🎀

that's the whole page, bestie — brought to you by LAPACK Version 3.12.0 and the footer path /home/abui...IG/zslect.f(3) 💖✨

📦 where this page comes from