DDRVPB(3)

💅 DDRVPB(3) — like, the whole entire file /home/abui...IN/ddrvpb.f, bestie

okay so first thing's first: this page is <italic>ddrvpb.f</italic>(3) from the LAPACK library functions manual, and honestly? it's giving "test harness main character" and I'm obsessed. it lives at the deeply unhinged path /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/ddrvpb.f — which, like, yes, that's the NAME section, don't @ me, that's literally the whole name section 💀

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✨ SYNOPSIS ✨

🫶 Functions/Subroutines

subroutine DDRVPB (dotype, nn, nval, nrhs, thresh, tsterr, nmax, a,
    afac, asav, b, bsav, x, xact, s, work, rwork, iwork, nout)

DDRVPB — that's it, that's the whole vibe check, she's a subroutine and she knows it 🎀

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🌸 Function/Subroutine Documentation 🌸

subroutine DDRVPB (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( * ) asav,
    double precision, dimension( * ) b, double precision, dimension( * )
    bsav, double precision, dimension( * ) x, double precision, dimension( *
    ) xact, double precision, dimension( * ) s, double precision, dimension(
    * ) work, double precision, dimension( * ) rwork, integer, dimension( *
    ) iwork, integer nout)

DDRVPB ✨ (yes bestie, she gets a whole section just for her own name, and honestly she earned it)

🦋 Purpose:

!> !> DDRVPB tests the driver routines DPBSV and -SVX. !>

like, that's her job. she tests DPBSV and -SVX, the driver routines. no cap, that's the whole purpose and she is THRIVING doing it 💖

🍓 Parameters

• DOTYPE — DOTYPE is LOGICAL array, dimension (NTYPES). The matrix types to be used for testing — matrices of type j (for 1 <= j <= NTYPES) get tested if DOTYPE(j) = .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used. periodt. 🙅‍♀️
• NN — NN is INTEGER. The number of values of N contained in the vector NVAL. count 'em, bestie 🔢
• NVAL — NVAL is INTEGER array, dimension (NN). The values of the matrix dimension N. she's holding all the sizes, iconic 👑
• NRHS — NRHS is INTEGER. The number of right hand side vectors to be generated for each linear system. one for every system, no shortchanging 😤
• THRESH — THRESH is DOUBLE PRECISION. The threshold value for the test ratios. a result gets included in the output file if RESULT >= THRESH. and if you want every test ratio printed? use THRESH = 0. literally all of them. 💀
• TSTERR — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested. are we testing the sad messy paths? this flag says yes or no 🚩
• NMAX — NMAX is INTEGER. The maximum value permitted for N, used in dimensioning the work arrays. the ceiling, the limit, the final boss of sizes 📏
• A — A is DOUBLE PRECISION array, dimension (NMAX*NMAX). the matrix herself 💅
• AFAC — AFAC is DOUBLE PRECISION array, dimension (NMAX*NMAX). the factored one, she's got layers 🧚
• ASAV — ASAV is DOUBLE PRECISION array, dimension (NMAX*NMAX). the saved copy, because sometimes you gotta go back 🫶
• B — B is DOUBLE PRECISION array, dimension (NMAX*NRHS). right hand side, doing her little job 🌈
• BSAV — BSAV is DOUBLE PRECISION array, dimension (NMAX*NRHS). and B's backup twin, matching outfits ⭐
• X — X is DOUBLE PRECISION array, dimension (NMAX*NRHS). the solution, the answer, the main character 🎀
• XACT — XACT is DOUBLE PRECISION array, dimension (NMAX*NRHS). the exact one — the reference solution, the standard, the icon 💖
• S — S is DOUBLE PRECISION array, dimension (NMAX). short array, big energy 🦋
• WORK — WORK is DOUBLE PRECISION array, dimension (NMAX*max(3,NRHS)). yes, max(3,NRHS), that's exactly what it says, don't come for me 😭
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX+2*NRHS). the 2* is load-bearing, fr fr 🔥
• IWORK — IWORK is INTEGER array, dimension (NMAX). the integer bestie of the group chat 🔢💜
• NOUT — NOUT is INTEGER. The unit number for output. where the tea gets printed ☕

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👑 Author

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

(not one, not two, not three, but FOUR institutions co-signed this. collab of the century 🫶✨)

Definition at line 161 of file ddrvpb.f. go look, it's right there 🎯

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🧚 Author

Generated automatically by Doxygen for LAPACK from the source code. so like, a robot wrote this page, and honestly? she ate 🤖💅

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and that's the page!! mwah 💋 this absolute legend is brought to you by LAPACK, Version 3.12.0 — that's the version, that's the source, and this whole thing is dated and lived at /home/abui...IN/ddrvpb.f(3). bye bestie, go test those drivers 🦋💖✨