SRC/chetrs_aa_2stage.f(3)

✨ NAME ✨

okay so bestie, welcome to the Library Functions Manual page for SRC/chetrs_aa_2stage.f — aka SRC/chetrs_aa_2stage.f(3). This is the manual-page home of the CHETRS_AA_2STAGE subroutine, and we're gonna get into it. 💖

🌸 SYNOPSIS 🌸

Functions/Subroutines

   subroutine chetrs_aa_2stage (uplo, n, nrhs, a, lda, tb, ltb, ipiv,
       ipiv2, b, ldb, info)
       CHETRS_AA_2STAGE

🦋 Function/Subroutine Documentation 🦋

Here's the full typed signature, no cap:

   subroutine chetrs_aa_2stage (character uplo, integer n, integer nrhs,
       complex, dimension( lda, * ) a, integer lda, complex, dimension( * ) tb,
       integer ltb, integer, dimension( * ) ipiv, integer, dimension( * )
       ipiv2, complex, dimension( ldb, * ) b, integer ldb, integer info)
       CHETRS_AA_2STAGE

💅 Purpose 💅

CHETRS_AA_2STAGE solves a system of linear equations A*X = B with a real hermitian matrix A using the factorization A = U**T*T*U or A = L*T*L**T computed by CHETRF_AA_2STAGE.

🎀 Parameters 🎀

• UPLO — CHARACTER*1. Specifies whether the details of the factorization are stored as an upper or lower triangular matrix.
  • = 'U': Upper triangular, form is A = U**T*T*U;
  • = 'L': Lower triangular, form is A = L*T*L**T.
• N — INTEGER. The order of the matrix A. N >= 0.
• NRHS — INTEGER. The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
• A — COMPLEX array, dimension (LDA,N). Details of factors computed by CHETRF_AA_2STAGE.
• LDA — INTEGER. The leading dimension of the array A. LDA >= max(1,N).
• TB — COMPLEX array, dimension (LTB). Details of factors computed by CHETRF_AA_2STAGE.
• LTB — INTEGER. The size of the array TB. LTB >= 4*N.
• IPIV — INTEGER array, dimension (N). Details of the interchanges as computed by CHETRF_AA_2STAGE.
• IPIV2 — INTEGER array, dimension (N). Details of the interchanges as computed by CHETRF_AA_2STAGE.
• B — COMPLEX array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X.
• LDB — INTEGER. The leading dimension of the array B. LDB >= max(1,N).
• INFO — 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 chetrs_aa_2stage.f.

💫 Author (auto-generated note) 💫

Generated automatically by Doxygen for LAPACK from the source code.

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and that's the footer tea, bestie: it's giving final sign-off — LAPACK Version 3.12.0 with page SRC/chetrs_aa_2stage.f(3). mwah 💋💅