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ZGTTS2(1) LAPACK auxiliary routine (version 3.2) ZGTTS2(1)

NAME

ZGTTS2 - solves one of the systems of equations A * X = B, A**T * X = B, or A**H * X = B,

SYNOPSIS

ITRANS, N, NRHS, DL, D, DU, DU2, IPIV, B, LDB )

INTEGER ITRANS, LDB, N, NRHS INTEGER IPIV( * ) COMPLEX*16 B( LDB, * ), D( * ), DL( * ), DU( * ), DU2( * )

PURPOSE

ZGTTS2 solves one of the systems of equations
A * X = B, A**T * X = B, or A**H * X = B, with a tridiagonal matrix A using the LU factorization computed by ZGTTRF.

ARGUMENTS

Specifies the form of the system of equations. = 0: A * X = B (No transpose)
= 1: A**T * X = B (Transpose)
= 2: A**H * X = B (Conjugate transpose)
The order of the matrix A.
The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0.
The (n-1) multipliers that define the matrix L from the LU factorization of A.
The n diagonal elements of the upper triangular matrix U from the LU factorization of A.
The (n-1) elements of the first super-diagonal of U.
The (n-2) elements of the second super-diagonal of U.
The pivot indices; for 1 <= i <= n, row i of the matrix was interchanged with row IPIV(i). IPIV(i) will always be either i or i+1; IPIV(i) = i indicates a row interchange was not required.
On entry, the matrix of right hand side vectors B. On exit, B is overwritten by the solution vectors X.
The leading dimension of the array B. LDB >= max(1,N).
November 2008 LAPACK auxiliary routine (version 3.2)