ZLAUU2(3)

💖 NAME 💖

okay so this is the zlauu2(3) page, and yes bestie, it’s from the Library Functions Manual. The NAME line points straight at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/zlauu2.f, and that’s the whole file vibe we’re talking about. 🫶

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✨ SYNOPSIS ✨

🌸 Functions/Subroutines 🌸

• subroutine ZLAUU2 (uplo, n, a, lda, info) — the main character. ZLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices (unblocked algorithm). slay. 💅

subroutine ZLAUU2 (uplo, n, a, lda, info)

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🦋 Function/Subroutine Documentation 🦋

subroutine ZLAUU2 (character uplo, integer n, complex*16, dimension( lda, * ) a, integer lda, integer info)

ZLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices (unblocked algorithm). periodt. ✨

🎀 Purpose 🎀

ZLAUU2 computes the product U * U**H or L**H * L, where the triangular factor U or L is stored in the upper or lower triangular part of the array A. iconic behavior, honestly. 💖

If UPLO = 'U' or 'u' then the upper triangle of the result is stored, overwriting the factor U in A.

If UPLO = 'L' or 'l' then the lower triangle of the result is stored, overwriting the factor L in A.

This is the unblocked form of the algorithm, calling Level 2 BLAS. no cap. 🔥

🍓 Parameters 🍓

💜 UPLO

UPLO is CHARACTER*1. It specifies whether the triangular factor stored in the array A is upper or lower triangular:

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

💜 N

N is INTEGER. The order of the triangular factor U or L. N >= 0. ✨

💜 A

A is COMPLEX*16 array, dimension (LDA,N).

On entry, the triangular factor U or L.

On exit:

• if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of the product U * U**H;
• if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L**H * L.

that’s the whole overwrite situation, bestie. 🦋

💜 LDA

LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N). 🫶

💜 INFO

INFO is INTEGER.

• = 0: successful exit
• < 0: if INFO = -k, the k-th argument had an illegal value

👑 Author 👑

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

Definition at line 101 of file zlauu2.f. 📍

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🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code. it’s giving auto-generated glam. 💖

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cute sign-off: this footer tea is LAPACK Version 3.12.0 with source/path /home/abui...RC/zlauu2.f(3) — no date tagged on this page, bestie, but the version and path are right there. mwah 💋 🎀