CLATSP(3)

💅 NAME

okay bestie, this is the clatsp.f(3) manual page from the Library Functions Manual, and the header path is /home/abui...IN/clatsp.f(3). The NAME section is literally this full path:

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

No cap, that’s the whole name. 🫶

✨ SYNOPSIS

🌸 Functions/Subroutines

subroutine CLATSP (uplo, n, x, iseed)
    CLATSP

🦋 Function/Subroutine Documentation

🎀 subroutine CLATSP (character uplo, integer n, complex, dimension( * ) x, integer, dimension( * ) iseed)

CLATSP

💖 Purpose

okay so CLATSP generates a special test matrix for the complex symmetric (indefinite) factorization for packed matrices. The pivot blocks of the generated matrix will be in this order:

• 2x2 pivot block, non diagonalizable
• 1x1 pivot block
• 2x2 pivot block, diagonalizable
• (cycle repeats)

A row interchange is required for each non-diagonalizable 2x2 block. Periodt. 🔥

🍓 Parameters

UPLO

UPLO is CHARACTER. It specifies whether the generated matrix is to be upper or lower triangular.

• = 'U': Upper triangular
• = 'L': Lower triangular

N

N is INTEGER. It’s the dimension of the matrix to be generated.

X

X is COMPLEX array, dimension (N*(N+1)/2). It’s the generated matrix in packed storage format. The matrix consists of 3x3 and 2x2 diagonal blocks which result in the pivot sequence given above. The matrix outside these diagonal blocks is zero.

ISEED

ISEED is INTEGER array, dimension (4). On entry, it’s the seed for the random number generator. The last of the four integers must be odd. (modified on exit) 👀

👑 Author

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

Definition at line 83 of file clatsp.f.

🌈 Author

This page was generated automatically by Doxygen for LAPACK from the source code — slay, automation. ✨

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💖 cute sign-off, bestie: this is LAPACK Version 3.12.0, and the footer path is /home/abui...IN/clatsp.f(3) 🎀💅