SRC/dsytrs_aa.f(3)         Library Functions Manual         SRC/dsytrs_aa.f(3)

NAME
       SRC/dsytrs_aa.f

SYNOPSIS
   Functions/Subroutines
       subroutine dsytrs_aa (uplo, n, nrhs, a, lda, ipiv, b, ldb, work, lwork,
           info)
           DSYTRS_AA

Function/Subroutine Documentation
   subroutine dsytrs_aa (character uplo, integer n, integer nrhs, double
       precision, dimension( lda, * ) a, integer lda, integer, dimension( * )
       ipiv, double precision, dimension( ldb, * ) b, integer ldb, double
       precision, dimension( * ) work, integer lwork, integer info)
       DSYTRS_AA

       Purpose:


           !>
           !> DSYTRS_AA solves a system of linear equations A*X = B with a real
           !> symmetric matrix A using the factorization A = U**T*T*U or
           !> A = L*T*L**T computed by DSYTRF_AA.
           !>

       Parameters
           UPLO

           !>          UPLO is 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**T*T*U;
           !>          = 'L':  Lower triangular, form is A = L*T*L**T.
           !>

           N

           !>          N is INTEGER
           !>          The order of the matrix A.  N >= 0.
           !>

           NRHS

           !>          NRHS is INTEGER
           !>          The number of right hand sides, i.e., the number of columns
           !>          of the matrix B.  NRHS >= 0.
           !>

           A

           !>          A is DOUBLE PRECISION array, dimension (LDA,N)
           !>          Details of factors computed by DSYTRF_AA.
           !>

           LDA

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

           IPIV

           !>          IPIV is INTEGER array, dimension (N)
           !>          Details of the interchanges as computed by DSYTRF_AA.
           !>

           B

           !>          B is DOUBLE PRECISION array, dimension (LDB,NRHS)
           !>          On entry, the right hand side matrix B.
           !>          On exit, the solution matrix X.
           !>

           LDB

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

           WORK

           !>          WORK is DOUBLE PRECISION array, dimension (MAX(1,LWORK))
           !>

           LWORK

           !>          LWORK is INTEGER
           !>          The dimension of the array WORK.
           !>          If MIN(N,NRHS) = 0, LWORK >= 1, else LWORK >= 3*N-2.
           !>
           !>          If LWORK = -1, then a workspace query is assumed; the routine
           !>          only calculates the minimal size of the WORK array, returns
           !>          this value as the first entry of the WORK array, and no error
           !>          message related to LWORK is issued by XERBLA.
           !>

           INFO

           !>          INFO is INTEGER
           !>          = 0:  successful exit
           !>          < 0:  if INFO = -i, the i-th argument had an illegal value
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 135 of file dsytrs_aa.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0              SRC/dsytrs_aa.f(3)