TESTING/EIG/schkec.f(3)

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version 3.12.1 · 2 versions
, in arch rolling

okay so bestie, this is TESTING/EIG/schkec.f(3) from the Library Functions Manual — and it’s literally all about SCHKEC, the eigen-condition testing routine. let’s get into it 💅

🌸 NAME 🌸

TESTING/EIG/schkec.f

✨ SYNOPSIS ✨

🫶 Functions/Subroutines 🫶

  • subroutine schkec (thresh, tsterr, nin, nout) — SCHKEC

🦋 Function/Subroutine Documentation 🦋

subroutine schkec (real thresh, logical tsterr, integer nin, integer nout)

SCHKEC

💖 Purpose 💖

SCHKEC tests eigen- condition estimation routines:

  • SLALN2
  • SLASY2
  • SLANV2
  • SLAQTR
  • SLAEXC
  • STRSYL
  • STREXC
  • STRSNA
  • STRSEN
  • STGEXC

In all cases, the routine runs through a fixed set of numerical examples, subjects them to various tests, and compares the test results to a threshold THRESH. In addition, STREXC, STRSNA and STRSEN are tested by reading in precomputed examples from a file (on input unit NIN). Output is written to output unit NOUT.

🎀 Parameters 🎀

  • THRESH — THRESH is REAL. Threshold for residual tests. A computed test ratio passes the threshold if it is less than THRESH.
  • TSTERR — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested.
  • NIN — NIN is INTEGER. The logical unit number for input.
  • NOUT — NOUT is INTEGER. The logical unit number for output.

👑 Author 👑

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

Definition at line 75 of file schkec.f.

🧚 Author 🧚

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and that’s the cute little sign-off, bestie 💖: LAPACK — Version 3.12.0 — page tag TESTING/EIG/schkec.f(3); generated automatically by Doxygen for LAPACK from the source code. slay. 👑✨

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