TESTING/LIN/zchkqr.f(3)

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version 3.12.1 · 2 versions
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💅 TESTING/LIN/zchkqr.f(3)

okay so this is a page from the Library Functions Manual — the TESTING/LIN/zchkqr.f one, bestie, and it's lowkey iconic. it's giving "LAPACK test-suite internals" energy and honestly we're obsessed. come sit with me 🫶

✨ NAME ✨

TESTING/LIN/zchkqr.f

🌸 SYNOPSIS 🌸

Functions/Subroutines

  • subroutine zchkqr (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs, thresh, tsterr, nmax, a, af, aq, ar, ac, b, x, xact, tau, work, rwork, iwork, nout)

ZCHKQR

🎀 Function/Subroutine Documentation 🎀

subroutine zchkqr (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval, integer nrhs, double precision thresh, logical tsterr, integer nmax, complex*16, dimension( * ) a, complex*16, dimension( * ) af, complex*16, dimension( * ) aq, complex*16, dimension( * ) ar, complex*16, dimension( * ) ac, complex*16, dimension( * ) b, complex*16, dimension( * ) x, complex*16, dimension( * ) xact, complex*16, dimension( * ) tau, complex*16, dimension( * ) work, double precision, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

ZCHKQR

💜 Purpose:

!>
!> ZCHKQR tests ZGEQRF, ZUNGQR and ZUNMQR.
!>

literally what it says, no cap — it's the vibe check for those three routines. 🔥

✨ Parameters

  • DOTYPE — is LOGICAL array, dimension (NTYPES). The matrix types to be used for testing. Matrices of type j (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used. so it's the guest list fr fr — if your type isn't on it, you're not getting in 🙈
  • NM — is INTEGER. The number of values of M contained in the vector MVAL. that's how many row-sizes we're serving today 💅
  • MVAL — is INTEGER array, dimension (NM). The values of the matrix row dimension M. the row dimensions themselves, being all main character 👑
  • NN — is INTEGER. The number of values of N contained in the vector NVAL. count of column-sizes, periodt.
  • NVAL — is INTEGER array, dimension (NN). The values of the matrix column dimension N. the column dimensions in their full glory ✨
  • NNB — is INTEGER. The number of values of NB and NX contained in the vectors NBVAL and NXVAL. The blocking parameters are used in pairs (NB,NX). okay so these two are a package deal bestie, always paired up 🫶
  • NBVAL — is INTEGER array, dimension (NNB). The values of the blocksize NB. slay, blocksize.
  • NXVAL — is INTEGER array, dimension (NNB). The values of the crossover point NX. the crossover point, iconic as always 💖
  • NRHS — is INTEGER. The number of right hand side vectors to be generated for each linear system. how many RHS vectors we're generating per system, no biggie.
  • THRESH — is DOUBLE PRECISION. The threshold value for the test ratios. A result is included in the output file if RESULT >= THRESH. To have every test ratio printed, use THRESH = 0. 🚨 real talk: set it to 0 and you get everything printed — every single one, she does not hold back 😭
  • TSTERR — is LOGICAL. Flag that indicates whether error exits are to be tested. are we testing the error exits or not, that's the whole question.
  • NMAX — is INTEGER. The maximum value permitted for M or N, used in dimensioning the work arrays. the absolute ceiling for M or N — also literally what sizes the work arrays 🧚
  • A — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • AF — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • AQ — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • AR — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • AC — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • B — is COMPLEX*16 array, dimension (NMAX*NRHS)
  • X — is COMPLEX*16 array, dimension (NMAX*NRHS)
  • XACT — is COMPLEX*16 array, dimension (NMAX*NRHS)
  • TAU — is COMPLEX*16 array, dimension (NMAX)
  • WORK — is COMPLEX*16 array, dimension (NMAX*NMAX)
  • RWORK — is DOUBLE PRECISION array, dimension (NMAX)
  • IWORK — is INTEGER array, dimension (NMAX)
  • NOUT — is INTEGER. The unit number for output. where the tea gets printed 💅

🌈 Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

⭐ Definition at line 198 of file zchkqr.f.

🦋 Author 🦋

Generated automatically by Doxygen for LAPACK from the source code. (not a human, just a robot doing her little thing 🤖✨)

aaaand that's the whole page bestie 💖 this was LAPACK, Version 3.12.0, from TESTING/LIN/zchkqr.f(3) — go forth and test those QR routines, you're gonna ate 🎀👑

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