ZLATB4(3)

🦋 ZLATB4(3) — like, the LAPACK parameter-setter for the matrix generator, bestie 🎀

ok so this page lives at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zlatb4.f and it's from the LAPACK Library Functions Manual — yes the header ate the whole path, we been knew 💅. Anyway. Sit down, grab a strawberry 🍓, and lemme tell you about this little icon.

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✨ SYNOPSIS ✨

Functions/Subroutines

• subroutine ZLATB4 (path, imat, m, n, type, kl, ku, anorm, mode, cndnum, dist) — the whole vibe, right there. That's the one.

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🌸 Function/Subroutine Documentation 🌸

subroutine ZLATB4 (character*3 path, integer imat, integer m, integer n,
     character type, integer kl, integer ku, double precision anorm, integer
     mode, double precision cndnum, character dist)

💖 ZLATB4

⭐ Purpose

!> !> ZLATB4 sets parameters for the matrix generator based on the type of !> matrix to be generated. !>

fr fr that's literally the whole job — it's the setup girlie. You tell it what kind of matrix you want, and it hands back the parameters so the generator knows what to build. main character energy for a helper subroutine honestly 👑

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🎀 Parameters

• PATH — CHARACTER*3, the LAPACK path name.

!> PATH is CHARACTER*3 !> The LAPACK path name. !>

• IMAT — INTEGER, an integer key describing which matrix to generate for this path.

!> IMAT is INTEGER !> An integer key describing which matrix to generate for this !> path. !>

• M — INTEGER, the number of rows in the matrix to be generated.

!> M is INTEGER !> The number of rows in the matrix to be generated. !>

• N — INTEGER, the number of columns in the matrix to be generated.

!> N is INTEGER !> The number of columns in the matrix to be generated. !>

• TYPE — CHARACTER*1, the type of the matrix to be generated, and bestie there are exactly four flavours 🔥:

!> TYPE is CHARACTER*1 !> The type of the matrix to be generated: !> = 'S': symmetric matrix !> = 'H': Hermitian matrix !> = 'P': Hermitian positive (semi)definite matrix !> = 'N': nonsymmetric matrix !>

So: 'S' = symmetric, 'H' = Hermitian, 'P' = Hermitian positive (semi)definite, 'N' = nonsymmetric. Periodt.

• KL — INTEGER, the lower band width of the matrix to be generated.

!> KL is INTEGER !> The lower band width of the matrix to be generated. !>

• KU — INTEGER, the upper band width of the matrix to be generated.

!> KU is INTEGER !> The upper band width of the matrix to be generated. !>

• ANORM — DOUBLE PRECISION, the desired norm of the matrix to be generated. The diagonal matrix of singular values or eigenvalues gets scaled by this value.

!> ANORM is DOUBLE PRECISION !> The desired norm of the matrix to be generated. The diagonal !> matrix of singular values or eigenvalues is scaled by this !> value. !>

• MODE — INTEGER, a key indicating how to choose the vector of eigenvalues.

!> MODE is INTEGER !> A key indicating how to choose the vector of eigenvalues. !>

• CNDNUM — DOUBLE PRECISION, the desired condition number.

!> CNDNUM is DOUBLE PRECISION !> The desired condition number. !>

• DIST — CHARACTER*1, the type of distribution to be used by the random number generator.

!> DIST is CHARACTER*1 !> The type of distribution to be used by the random number !> generator. !>

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👑 Author

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

(shoutout to the whole committee, we love a collaborative slay 🫶)

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🧚 Definition at line 119 of file zlatb4.f.

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💜 Author (the meta one)

Generated automatically by Doxygen for LAPACK from the source code. Not me, not you — the robot did it 🤖✨.

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ok bye bestie!! this page is from LAPACK Version 3.12.0, source /home/abui...IN/zlatb4.f(3) — no date on the footer, don't come for me 😭 — and that's the whole tea. go generate some iconic matrices 💅🌈⭐