ZLATTP(3)

💅 zlattp.f(3) — Library Functions Manual

okay bestie, welcome to the zlattp.f(3) page. It’s giving LAPACK test-matrix energy, and we are keeping every flag, formula, and author line. no cap. 🫶

✨ NAME

The full path-name situation is exactly this: /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zlattp.f. That’s the file this page documents. 💖

✨ SYNOPSIS

Functions/Subroutines

Here’s the callable vibe:

subroutine ZLATTP (imat, uplo, trans, diag, iseed, n, ap, b, work,
    rwork, info)

and the lil’ name line: ZLATTP.

🎀 Function/Subroutine Documentation

Full signature, character-for-character:

subroutine ZLATTP (integer imat, character uplo, character trans, character
    diag, integer, dimension( 4 ) iseed, integer n, complex*16, dimension( *
    ) ap, complex*16, dimension( * ) b, complex*16, dimension( * ) work,
    double precision, dimension( * ) rwork, integer info)

ZLATTP

Purpose

ZLATTP generates a triangular test matrix in packed storage. IMAT and UPLO uniquely specify the properties of the test matrix, which is returned in the array AP. iconic behavior honestly. 🌸

Parameters

IMAT

IMAT is INTEGER. It’s 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 ZLATMS). Modified on exit. 👀

N

N is INTEGER. The order of the matrix to be generated.

AP

AP is COMPLEX*16 array, dimension (N*(N+1)/2). The upper or lower triangular matrix A, packed columnwise in a linear array. The j-th column of A is stored in the array AP as follows:

if UPLO = 'U', AP((j-1)*j/2 + i) = A(i,j) for 1<=i<=j;
if UPLO = 'L',
   AP((j-1)*(n-j) + j*(j+1)/2 + i-j) = A(i,j) for j<=i<=n.

B

B is COMPLEX*16 array, dimension (N). The right hand side vector, if IMAT > 10.

WORK

WORK is COMPLEX*16 array, dimension (2*N).

RWORK

RWORK is DOUBLE PRECISION 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 129 of file zlattp.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

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Okay bestie, that’s the whole page. Source/version vibes: LAPACK, Version 3.12.0; footer path: /home/abui...IN/zlattp.f(3). The footer didn’t list a date, so I’m not making one up. Bye! 💖✨