/home/abui.../ssytrs2.f(3)

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/ssytrs2.f

okay bestie, this is the Library Functions Manual entrance for /home/abui.../ssytrs2.f(3) — and yes, the name section is literally just that long source path. iconic of Fortran docs tbh 💅

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✨ SYNOPSIS ✨

💅 Functions/Subroutines 💅

subroutine SSYTRS2 (uplo, n, nrhs, a, lda, ipiv, b, ldb, work, info)
    SSYTRS2

SSYTRS2 is the main character here, no cap 🫶

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🦋 Function/Subroutine Documentation 🦋

subroutine SSYTRS2 (character uplo, integer n, integer nrhs, real,
    dimension( lda, * ) a, integer lda, integer, dimension( * ) ipiv, real,
    dimension( ldb, * ) b, integer ldb, real, dimension( * ) work, integer
    info)
    SSYTRS2

💖 Purpose 💖

SSYTRS2 solves a system of linear equations A*X = B with a real symmetric matrix A using the factorization A = U*D*U**T or A = L*D*L**T computed by SSYTRF and converted by SSYCONV. slay linear algebra moment ✨

🎀 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*D*U**T; = 'L': Lower triangular, form is A = L*D*L**T. pick ur triangular vibe 💅
• 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 — REAL array, dimension (LDA,N). The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by SSYTRF. Note that A is input / output. This might be counter-intuitive, and one may think that A is input only. A is input / output. This is because, at the start of the subroutine, we permute A in a form and then we permute A back to its original form at the end. plot twist energy 🌀
• LDA — INTEGER. The leading dimension of the array A. LDA >= max(1,N).
• IPIV — INTEGER array, dimension (N). Details of the interchanges and the block structure of D as determined by SSYTRF.
• B — REAL array, dimension (LDB,NRHS). On entry, the right hand side matrix B. On exit, the solution matrix X. glow-up from RHS to answer bestie ✨
• LDB — INTEGER. The leading dimension of the array B. LDB >= max(1,N).
• WORK — REAL array, dimension (N).
• INFO — INTEGER. = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value. rude little error signal but okay 🚨

Author

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

Definition at line 130 of file ssytrs2.f.

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👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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