TESTING/LIN/zlatb4.f(3)

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🎀 TESTING/LIN/zlatb4.f(3) — Library Functions Manual 🎀

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✨ NAME ✨

TESTING/LIN/zlatb4.f

🌸 SYNOPSIS 🌸

🧚 Functions/Subroutines 🧚

subroutine zlatb4 (path, imat, m, n, type, kl, ku, anorm, mode, cndnum,
     dist)

ZLATB4

🛠️ Function/Subroutine Documentation 🛠️

okay here is the whole signature, no cap:

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. literally its whole job, and it ate 💅

🌈 Parameters 🌈

  • PATH — PATH is CHARACTER*3. it's the LAPACK path name.
  • IMAT — IMAT is INTEGER. an integer key describing which matrix to generate for this path.
  • M — M is INTEGER. the number of rows in the matrix to be generated.
  • N — N is INTEGER. the number of columns in the matrix to be generated.
  • TYPE — TYPE is CHARACTER*1. the type of the matrix to be generated, bestie:
    • = 'S': symmetric matrix
    • = 'H': Hermitian matrix
    • = 'P': Hermitian positive (semi)definite matrix
    • = 'N': nonsymmetric matrix
  • KL — KL is INTEGER. the lower band width of the matrix to be generated.
  • KU — KU is INTEGER. the upper band width of the matrix to be generated.
  • ANORM — 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 — MODE is INTEGER. a key indicating how to choose the vector of eigenvalues.
  • CNDNUM — CNDNUM is DOUBLE PRECISION. the desired condition number.
  • DIST — DIST is CHARACTER*1. the type of distribution to be used by the random number generator.

👑 Author 👑

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

📍 Definition at line 📍

Definition at line 119 of file zlatb4.f.

👑 Author 👑

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