TESTING/LIN/clattr.f(3)

🎀 TESTING/LIN/clattr.f — Library Functions Manual 🎀

okay bestie, welcome to the page for TESTING/LIN/clattr.f — it's giving LAPACK test-matrix generator energy, and we're gonna walk through every single detail together. 💅✨

🦋 NAME 🦋

TESTING/LIN/clattr.f

✨ SYNOPSIS ✨

💖 Functions/Subroutines 💖

       subroutine clattr (imat, uplo, trans, diag, iseed, n, a, lda, b, work,
           rwork, info)
           CLATTR

📚 Function/Subroutine Documentation 📚

       subroutine clattr (integer imat, character uplo, character trans, character
           diag, integer, dimension( 4 ) iseed, integer n, complex, dimension( lda,
       * ) a, integer lda, complex, dimension( * ) b, complex, dimension( * )
       work, real, dimension( * ) rwork, integer info)
       CLATTR

💡 Purpose 💡

okay so CLATTR generates a triangular test matrix in 2-dimensional storage. IMAT and UPLO uniquely specify the properties of the test matrix, which is returned in the array A. No cap, that's the whole purpose. 🫶

🔧 Parameters 🔧

• IMAT — IMAT is INTEGER. An integer key describing which matrix to generate for this path. 🗝️
• UPLO — UPLO is CHARACTER*1. Specifies whether the matrix A will be upper or lower triangular.
  • = 'U': Upper triangular
  • = 'L': Lower triangular
• TRANS — TRANS is CHARACTER*1. Specifies whether the matrix or its transpose will be used.
  • = 'N': No transpose
  • = 'T': Transpose
  • = 'C': Conjugate transpose
• DIAG — DIAG is CHARACTER*1. Specifies whether or not the matrix A is unit triangular.
  • = 'N': Non-unit triangular
  • = 'U': Unit triangular
• ISEED — ISEED is INTEGER array, dimension (4). The seed vector for the random number generator (used in CLATMS). Modified on exit. 🌱
• N — N is INTEGER. The order of the matrix to be generated.
• A — A is COMPLEX array, dimension (LDA,N). The triangular matrix A. If UPLO = 'U', the leading N x N upper triangular part of the array A contains the upper triangular matrix, and the strictly lower triangular part of A is not referenced. If UPLO = 'L', the leading N x N lower triangular part of the array A contains the lower triangular matrix and the strictly upper triangular part of A is not referenced. 🦋
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N).
• B — B is COMPLEX array, dimension (N). The right hand side vector, if IMAT > 10. 💌
• WORK — WORK is COMPLEX array, dimension (2*N).
• RWORK — RWORK is REAL array, dimension (N).
• INFO — INFO is INTEGER.
  • = 0: successful exit
  • < 0: if INFO = -i, the i-th argument had an illegal value

👑 Author 👑

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

📌 Definition at line 136 of file clattr.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

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okay bestie, that's the whole vibe. This page is from LAPACK Version 3.12.0 and the file is TESTING/LIN/clattr.f(3). bye 💖✨🎀