PSDTSV(l)

📦 version 1.5, in ubuntu jammy

PSDTSV(l) ✨

okay bestie, welcome to the group chat. This is PSDTSV(l), a LAPACK routine (version 1.5). It is lowkey here to solve linear equations, and it is highkey serving numerical linear algebra realness. 💅

NAME 🎀

  • PSDTSV — solve a system of linear equations
A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)

SYNOPSIS 🌸

SUBROUTINE PSDTSV( N, NRHS, DL, D, DU, JA, DESCA, B, IB, DESCB, WORK,
                   LWORK, INFO )

    INTEGER        IB, INFO, JA, LWORK, N, NRHS

    INTEGER        DESCA( * ), DESCB( * )

    REAL           B( * ), D( * ), DL( * ), DU( * ), WORK( * )

PURPOSE 💖

PSDTSV solves a system of linear equations, where A(1:N, JA:JA+N-1) is an N-by-N real tridiagonal diagonally dominant-like distributed matrix.

Gaussian elimination without pivoting is the move here — it is used to factor a reordering of the matrix into L U.

Wanna know the deets? See PSDTTRF and PSDTTRS for details. 👑

That's the whole vibe, bestie. This page is from LAPACK, version 1.5, dated 12 May 1997, and its manual page name is PSDTSV(l). Slay. 💖✨

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