/home/abui.../zhetrs2.f(3)

🌸 ZHETRS2 — bestie's guide to solving A*X = B 💅

okay so first things first, the manual name is /home/abui.../zhetrs2.f(3) and the whole thing lives at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/zhetrs2.f — that's the file, that's where the magic is, no cap. ✨

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✨ SYNOPSIS ✨

🎀 Functions/Subroutines

subroutine ZHETRS2 (uplo, n, nrhs, a, lda, ipiv, b, ldb, work, info)

ZHETRS2 🫶

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💖 Function/Subroutine Documentation 💖

subroutine ZHETRS2 (character uplo, integer n, integer nrhs, complex*16,
    dimension( lda, * ) a, integer lda, integer, dimension( * ) ipiv,
    complex*16, dimension( ldb, * ) b, integer ldb, complex*16, dimension( *
    ) work, integer info)

ZHETRS2 🦋

⭐ Purpose:

!>
!> ZHETRS2 solves a system of linear equations A*X = B with a complex
!> Hermitian matrix A using the factorization A = U*D*U**H or
!> A = L*D*L**H computed by ZHETRF and converted by ZSYCONV.
!>

Like, literally, it solves A*X = B for a complex Hermitian matrix A, using the factorization A = U*D*U**H or A = L*D*L**H that ZHETRF computed and ZSYCONV converted. she ate that. 👑

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🌈 Parameters

• UPLO — UPLO is CHARACTER*1. It tells you whether the factorization details are stored as an upper or lower triangular matrix, bestie. The options:
  • = 'U': Upper triangular, form is A = U*D*U**H;
  • = 'L': Lower triangular, form is A = L*D*L**H.
• N — N is INTEGER. The order of the matrix A. N >= 0. 📏
• NRHS — NRHS is INTEGER. The number of right hand sides, i.e. the number of columns of the matrix B. NRHS >= 0. so many right hand sides, so little time 😭
• A — A is COMPLEX*16 array, dimension (LDA,N). It holds the block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by ZHETRF. iconic container energy 💜
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N). 👑 respect the leading dimension fr fr
• IPIV — IPIV is INTEGER array, dimension (N). Details of the interchanges and the block structure of D as determined by ZHETRF. 🌀
• B — B is COMPLEX*16 array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X. she goes IN as B and comes OUT as X, main character transformation 💫
• LDB — LDB is INTEGER. The leading dimension of the array B. LDB >= max(1,N). 🎯
• WORK — WORK is COMPLEX*16 array, dimension (N). a whole array of workspace, just vibing 🧚
• INFO — INFO is INTEGER. The iykyk status code:
  • = 0: successful exit ✨
  • < 0: if INFO = -i, the i-th argument had an illegal value 💀

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🎀 Author

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

🌸 Definition at line 125 of file zhetrs2.f.

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🦋 Author

Generated automatically by Doxygen for LAPACK from the source code. not a human, just a very diligent little doc generator doing its thing 🙈

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ok that's the whole page, bestie — nothing skipped, nothing invented. ZHETRS2 really said "I solve systems and I look cute doing it." 💅

LAPACK — Version 3.12.0 🌈 and the page itself is /home/abui.../zhetrs2.f(3). mwah, go forth and factorize 🫶💖