DSYTRS_AA_2STAGE(3)

💖 DSYTRS_AA_2STAGE 💖

okay bestie, this is the Library Functions Manual page for DSYTRS_AA_2STAGE — the file tag is dsytrs_aa_2stage.f(3), and yes it’s giving certified LAPACK main character energy. 💅✨

🎀 NAME 🎀

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/dsytrs_aa_2stage.f

🌸 SYNOPSIS 🌸

🦋 Functions/Subroutines 🦋

subroutine DSYTRS_AA_2STAGE (uplo, n, nrhs, a, lda, tb, ltb, ipiv,
           ipiv2, b, ldb, info)

DSYTRS_AA_2STAGE is the subroutine name, no cap. 🫶

🔥 Function/Subroutine Documentation 🔥

✨ subroutine DSYTRS_AA_2STAGE ✨

subroutine DSYTRS_AA_2STAGE (character uplo, integer n, integer nrhs, double
       precision, dimension( lda, * ) a, integer lda, double precision,
       dimension( * ) tb, integer ltb, integer, dimension( * ) ipiv, integer,
       dimension( * ) ipiv2, double precision, dimension( ldb, * ) b, integer
       ldb, integer info)

💖 Purpose 💖

DSYTRS_AA_2STAGE solves a system of linear equations A*X = B with a real symmetric matrix A using the factorization A = U**T*T*U or A = L*T*L**T computed by DSYTRF_AA_2STAGE. Slay, that’s the whole purpose, periodt. 👑

💅 Parameters 💅

• UPLO — 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**T*T*U; = 'L': Lower triangular, form is A = L*T*L**T.
• 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.
• A — A is DOUBLE PRECISION array, dimension (LDA,N). Details of factors computed by DSYTRF_AA_2STAGE.
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N).
• TB — TB is DOUBLE PRECISION array, dimension (LTB). Details of factors computed by DSYTRF_AA_2STAGE.
• LTB — LTB is INTEGER. The size of the array TB. LTB >= 4*N.
• IPIV — IPIV is INTEGER array, dimension (N). Details of the interchanges as computed by DSYTRF_AA_2STAGE.
• IPIV2 — IPIV2 is INTEGER array, dimension (N). Details of the interchanges as computed by DSYTRF_AA_2STAGE.
• B — B is DOUBLE PRECISION array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X.
• LDB — LDB is INTEGER. The leading dimension of the array B. LDB >= max(1,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 📌

Definition at line 137 of file dsytrs_aa_2stage.f.

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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🌸 Cute little sign-off: the footer says LAPACK Version 3.12.0, with source marker /home/abui...aa_2stage.f(3). No separate date is shown in that footer text, so we’re not inventing one — periodt. Bye bestie, go solve that system! 💖