TESTING/LIN/ddrvsy.f(3)

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version 3.12.1 · 2 versions
, in arch rolling

💖 TESTING/LIN/ddrvsy.f 💖

okay so bestie, gather round, because this is a page from the LAPACK manual — specifically the TESTING/LIN corner of it, which is where the testing lives. Yes, the testers have testers. It's giving "who tests the testers" and the answer is this subroutine. 🎀

✨ SYNOPSIS ✨

Functions/Subroutines

subroutine ddrvsy (dotype, nn, nval, nrhs, thresh, tsterr, nmax, a,
    afac, ainv, b, x, xact, work, rwork, iwork, nout)

DDRVSY — that's the whole vibe. 🌸

🦋 Function/Subroutine Documentation 🦋

subroutine ddrvsy

here's the full signature, character for character, no cap:

subroutine ddrvsy (logical, dimension( * ) dotype, integer nn, integer,
    dimension( * ) nval, integer nrhs, double precision thresh, logical
    tsterr, integer nmax, double precision, dimension( * ) a, double
    precision, dimension( * ) afac, double precision, dimension( * ) ainv,
    double precision, dimension( * ) b, double precision, dimension( * ) x,
    double precision, dimension( * ) xact, double precision, dimension( * )
    work, double precision, dimension( * ) rwork, integer, dimension( * )
    iwork, integer nout)

DDRVSY

🌈 Purpose:

DDRVSY tests the driver routines DSYSV and -SVX. literally that's the whole job. it runs the vibes check on those two drivers. 👑

💅 Parameters

okay bestie, here's every single one, and yes we're doing all of them:

  • DOTYPE — DOTYPE is LOGICAL array, dimension (NTYPES). It's 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 a lil yes/no list for which matrix types get to come to the party. 🙈
  • NN — NN is INTEGER. The number of values of N contained in the vector NVAL.
  • NVAL — NVAL is INTEGER array, dimension (NN). These are the values of the matrix dimension N. slay.
  • NRHS — NRHS is INTEGER. The number of right hand side vectors to be generated for each linear system. yes ma'am, that many RHS vectors. 💜
  • THRESH — 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. zero means show me everything, main character energy. 🔥
  • TSTERR — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested.
  • NMAX — NMAX is INTEGER. The maximum value permitted for N, used in dimensioning the work arrays. it's the size limit bestie, respect it.
  • A — A is DOUBLE PRECISION array, dimension (NMAX*NMAX).
  • AFAC — AFAC is DOUBLE PRECISION array, dimension (NMAX*NMAX).
  • AINV — AINV is DOUBLE PRECISION array, dimension (NMAX*NMAX).
  • B — B is DOUBLE PRECISION array, dimension (NMAX*NRHS).
  • X — X is DOUBLE PRECISION array, dimension (NMAX*NRHS).
  • XACT — XACT is DOUBLE PRECISION array, dimension (NMAX*NRHS).
  • WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*max(2,NRHS)). note the max(2,NRHS) bestie, it's genuinely built different. ✨
  • RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX+2*NRHS).
  • IWORK — IWORK is INTEGER array, dimension (2*NMAX).
  • NOUT — NOUT is INTEGER. The unit number for output. 🫶

👑 Author

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

Definition at line 149 of file ddrvsy.f.

💀 Author

Generated automatically by Doxygen for LAPACK from the source code. so nobody hand-wrote this one, the robots did it, and honestly? they ate. 🤖✨

so yeah, that's the whole page! LAPACK, Version 3.12.0 — and this lil beauty came out on the same date as the header up top, which we're folding into this sign-off instead of copy-pasting the footer line, because we're classy like that. mwah, bye bestie! 💖🦋🌸

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