SRC/zhetrs_aa_2stage.f(3)

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version 3.12.1 · 7 versions
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💖 NAME 💖

SRC/zhetrs_aa_2stage.f — okay so this is the Library Functions Manual page for the ZHETRS_AA_2STAGE subroutine, bestie. It’s giving solver-girl main character energy. 💅

🌸 SYNOPSIS 🌸

💅 Functions/Subroutines

subroutine zhetrs_aa_2stage (uplo, n, nrhs, a, lda, tb, ltb, ipiv,
    ipiv2, b, ldb, info)

ZHETRS_AA_2STAGE

✨ Function/Subroutine Documentation ✨

🎀 ZHETRS_AA_2STAGE 🎀

subroutine zhetrs_aa_2stage (character uplo, integer n, integer nrhs,
    complex*16, dimension( lda, * ) a, integer lda, complex*16, dimension( *
    ) tb, integer ltb, integer, dimension( * ) ipiv, integer, dimension( * )
    ipiv2, complex*16, dimension( ldb, * ) b, integer ldb, integer info)

🦋 Purpose 🦋

Okay so ZHETRS_AA_2STAGE solves a system of linear equations A*X = B with a hermitian matrix A using the factorization A = U**H*T*U or A = L*T*L**H computed by ZHETRF_AA_2STAGE. That’s the whole vibe, no cap. ✨

💜 Parameters 💜

  • UPLO — is CHARACTER*1. It specifies whether the details of the factorization are stored as an upper or lower triangular matrix. = 'U': Upper triangular, form is A = U**H*T*U; = 'L': Lower triangular, form is A = L*T*L**H.
  • N — is INTEGER. The order of the matrix A. N >= 0.
  • NRHS — is INTEGER. The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
  • A — is COMPLEX*16 array, dimension (LDA,N). Details of factors computed by ZHETRF_AA_2STAGE.
  • LDA — is INTEGER. The leading dimension of the array A. LDA >= max(1,N).
  • TB — is COMPLEX*16 array, dimension (LTB). Details of factors computed by ZHETRF_AA_2STAGE.
  • LTB — is INTEGER. The size of the array TB. LTB >= 4*N.
  • IPIV — is INTEGER array, dimension (N). Details of the interchanges as computed by ZHETRF_AA_2STAGE.
  • IPIV2 — is INTEGER array, dimension (N). Details of the interchanges as computed by ZHETRF_AA_2STAGE.
  • B — is COMPLEX*16 array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X.
  • LDB — is INTEGER. The leading dimension of the array B. LDB >= max(1,N).
  • 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 139 of file zhetrs_aa_2stage.f.

🌈 Author 🌈

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That’s the whole page, bestie! The footer sign-off is: LAPACK Version 3.12.0, SRC/zhetrs_aa_2stage.f(3). 💖✨🎀

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