DLCTSX(3)

📦 version 3.12.0, in opensuse-leap 16.0

💅 DLCTSX(3) — a LAPACK library function, bestie

okay so this page is from the LAPACK manual, version 3.12.0, and it lives at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/EIG/dlctsx.f and honestly? we're gonna get through it together. 🫶

✨ NAME ✨

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

like, yes, the NAME section is literally just the path to the source file. that's the whole name. the file is the name. iconic behaviour tbh 💀

🌸 SYNOPSIS 🌸

Functions/Subroutines

logical function DLCTSX (ar, ai, beta)
    DLCTSX

🦋 Function/Subroutine Documentation 🦋

logical function DLCTSX (double precision ar, double precision ai, double precision beta)
    DLCTSX

🎀 Purpose 🎀

ok so listen — this function decides which eigenvalues get selected. that's its whole job. it's the vibe check for eigenvalues, basically. 👑

but here's the tea, and I need you to hear me on this:

This function is used to determine what eigenvalues will be selected. If this is part of the test driver DDRGSX, do not change the code UNLESS you are testing input examples and not using the built-in examples.

fr fr. do not touch the code if it's part of the DDRGSX test driver — unless you're testing input examples and you're not using the built-in examples. that's the one exception. otherwise hands off 🙈

💖 Parameters 💖

  • AR — AR is DOUBLE PRECISION, and it's the numerator of the real part of a complex eigenvalue, written as (AR/BETA) + i*(AI/BETA). so real-part numerator energy ✨
  • AI — AI is DOUBLE PRECISION, and it's the numerator of the imaginary part of a complex eigenvalue, written as (AR/BETA) + i*(AI). imaginary-part numerator, slay 🌈
  • BETA — BETA is DOUBLE PRECISION, and it's the denominator part of a complex eigenvalue, written as (AR/BETA) + i*(AI/BETA). the denominator, the anchor, the main character of the trio 💅

👑 Author 👑

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

four whole institutions credited, as they should be 🎀

⭐ Definition ⭐

Definition at line 64 of file dlctsx.f.

🌺 Author 🌺

Generated automatically by Doxygen for LAPACK from the source code. not me writing this by hand, it's Doxygen doing its little autogenerated thing 🧚

so yeah — that's the whole page, bestie. LAPACK version 3.12.0, and the footer timestamp came straight off /home/abui...IG/dlctsx.f(3). go forth and select your eigenvalues responsibly 💜🦋

📦 where this page comes from