ZDRVPB(3)

🎀 ZDRVPB(3) — the LAPACK testing driver for ZPBSV and -SVX, bestie 💅

Okay so this is from the LAPACK Library Functions Manual, and the whole page is about one lil Fortran file: /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zdrvpb.f. Yes that's the whole path, no I'm not shortening it, it's lowkey iconic that it's that long. 🫶

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✨ NAME ✨

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zdrvpb.f

That's it. That's the name. The manpage literally just names the file. Main character energy fr fr. 🌸

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🦋 SYNOPSIS 🦋

Functions/Subroutines

• subroutine ZDRVPB (dotype, nn, nval, nrhs, thresh, tsterr, nmax, a, afac, asav, b, bsav, x, xact, s, work, rwork, nout) — the one and only, the whole squad of arguments, all listed, no skips. 👑

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💖 Function/Subroutine Documentation 💖

So here's the full signature with all its types, laid out exactly like the source does it:

subroutine ZDRVPB (logical, dimension( * ) dotype, integer nn, integer,
    dimension( * ) nval, integer nrhs, double precision thresh, logical
    tsterr, integer nmax, complex*16, dimension( * ) a, complex*16,
    dimension( * ) afac, complex*16, dimension( * ) asav, complex*16,
    dimension( * ) b, complex*16, dimension( * ) bsav, complex*16,
    dimension( * ) x, complex*16, dimension( * ) xact, double precision,
    dimension( * ) s, complex*16, dimension( * ) work, double precision,
    dimension( * ) rwork, integer nout)

ZDRVPB 🌟

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🧚 Purpose 🧚

!> !> ZDRVPB tests the driver routines ZPBSV and -SVX. !>

That's the whole purpose. She tests the driver routines ZPBSV and -SVX. Short, sweet, booked and busy. 💅

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⭐ Parameters ⭐

Bestie, there are a LOT of parameters here, so buckle up. Every single one, in order, with its exact type and dimension. No cap, I'm not skipping any. 🔥

• 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) get used for testing if DOTYPE(j) = .TRUE.; and if DOTYPE(j) = .FALSE., then type j is simply not used. Bye to type j, respectfully. 🙈
• NN — NN is INTEGER. The number of values of N contained in the vector NVAL. Like a headcount for the N squad. 💜
• NVAL — NVAL is INTEGER array, dimension (NN). The values of the matrix dimension N. These are literally the N's. 🤩
• NRHS — NRHS is INTEGER. The number of right hand side vectors to be generated for each linear system. Generating RHS vectors like it's a hobby. ✨
• THRESH — THRESH is DOUBLE PRECISION. The threshold value for the test ratios. A result is included in the output file if RESULT >= THRESH. And — real talk — to have every test ratio printed, use THRESH = 0. 👀
• TSTERR — TSTERR is LOGICAL. Flag that indicates whether error exits are to be tested. Yes bestie, we test the error exits too. 😭
• NMAX — NMAX is INTEGER. The maximum value permitted for N, used in dimensioning the work arrays. The ceiling, the limit, the moment of truth for array sizes. 🌈
• A — A is COMPLEX*16 array, dimension (NMAX*NMAX). That's a big girl dimension, periodt. 💀
• AFAC — AFAC is COMPLEX*16 array, dimension (NMAX*NMAX). Same energy, factored. 🎀
• ASAV — ASAV is COMPLEX*16 array, dimension (NMAX*NMAX). The save-a-copy version. She's prepared. 🦋
• B — B is COMPLEX*16 array, dimension (NMAX*NRHS). The right hand side B, looking cute as always. 💖
• BSAV — BSAV is COMPLEX*16 array, dimension (NMAX*NRHS). Backup B. Iconic behaviour, honestly. 🌸
• X — X is COMPLEX*16 array, dimension (NMAX*NRHS). The solution side of the story. ⭐
• XACT — XACT is COMPLEX*16 array, dimension (NMAX*NRHS). The exact one, for comparison purposes. She's the standard. 👑
• S — S is DOUBLE PRECISION array, dimension (NMAX). Just real numbers, no imaginary drama. 🍓
• WORK — WORK is COMPLEX*16 array, dimension (NMAX*max(3,NRHS)). Yes, max(3,NRHS) — I copied it exactly, that's what it says, do not come for me. 💅
• RWORK — RWORK is DOUBLE PRECISION array, dimension (NMAX+2*NRHS). Note the 2*NRHS, that's very much a thing. 🧚
• NOUT — NOUT is INTEGER. The unit number for output. Where the gossip (test results) gets printed. 📝

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👑 Author 👑

The whole tag team behind this:

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

Absolute legends, all four of them. 🫶

Definition at line 156 of file zdrvpb.f. — marking the spot, exactly as written. 💅

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💜 Author (again, but this time it's the doc generator) 💜

Generated automatically by Doxygen for LAPACK from the source code. So like, nobody hand-wrote this page — the robot did. Respect the robot. 🤖✨

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Mwah 💖 that's the whole page! It's LAPACK, Version 3.12.0, and the footer timestamp points right back at /home/abui...IN/zdrvpb.f(3). Go test those drivers, bestie — ZPBSV and -SVX aren't gonna verify themselves. 🎀🦋🌸