Provided by: liblapack-doc_3.3.1-1_all bug

NAME

       LAPACK-3  -  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 ZSYTRF and  converted  by
       ZSYCONV

SYNOPSIS

       SUBROUTINE ZSYTRS2( UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, INFO )

           CHARACTER       UPLO

           INTEGER         INFO, LDA, LDB, N, NRHS

           INTEGER         IPIV( * )

           DOUBLE          COMPLEX A( LDA, * ), B( LDB, * ), WORK( * )

PURPOSE

       ZSYTRS2  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  ZSYTRF  and  converted  by
       ZSYCONV.

ARGUMENTS

        UPLO    (input) 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.

        N       (input) INTEGER
                The order of the matrix A.  N >= 0.

        NRHS    (input) INTEGER
                The number of right hand sides, i.e., the number of columns
                of the matrix B.  NRHS >= 0.

        A       (input) DOUBLE COMPLEX array, dimension (LDA,N)
                The block diagonal matrix D and the multipliers used to
                obtain the factor U or L as computed by ZSYTRF.

        LDA     (input) INTEGER
                The leading dimension of the array A.  LDA >= max(1,N).

        IPIV    (input) INTEGER array, dimension (N)
                Details of the interchanges and the block structure of D
                as determined by ZSYTRF.

        B       (input/output) DOUBLE COMPLEX array, dimension (LDB,NRHS)
                On entry, the right hand side matrix B.
                On exit, the solution matrix X.

        LDB     (input) INTEGER
                The leading dimension of the array B.  LDB >= max(1,N).

        WORK    (workspace) REAL array, dimension (N)

        INFO    (output) INTEGER
                = 0:  successful exit
                < 0:  if INFO = -i, the i-th argument had an illegal value

 LAPACK PROTOTYPE routine (version 3.3.1)   April 2011                           ZSYTRS2(3lapack)