Query: pcpttrsv
OS: debian
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
PCPTTRSV(l) LAPACK routine (version 1.5) PCPTTRSV(l)NAMEPCPTTRSV - solve a tridiagonal triangular system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)SYNOPSISSUBROUTINE PCPTTRSV( UPLO, TRANS, N, NRHS, D, E, JA, DESCA, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO ) CHARACTER TRANS, UPLO INTEGER IB, INFO, JA, LAF, LWORK, N, NRHS INTEGER DESCA( * ), DESCB( * ) COMPLEX AF( * ), B( * ), E( * ), WORK( * ) REAL D( * )PURPOSEPCPTTRSV solves a tridiagonal triangular system of linear equations or A(1:N, JA:JA+N-1)^H * X = B(IB:IB+N-1, 1:NRHS) where A(1:N, JA:JA+N-1) is a tridiagonal triangular matrix factor produced by the Cholesky factorization code PCPTTRF and is stored in A(1:N,JA:JA+N-1) and AF. The matrix stored in A(1:N, JA:JA+N-1) is either upper or lower triangular according to UPLO, and the choice of solving A(1:N, JA:JA+N-1) or A(1:N, JA:JA+N-1)^H is dictated by the user by the parameter TRANS. Routine PCPTTRF MUST be called first. LAPACK version 1.5 12 May 1997 PCPTTRSV(l)
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