csytrs_aa.f man page

subroutine csytrs_aa (UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, LWORK, INFO)
CSYTRS_AA

CSYTRS_AA  

Purpose:

 CSYTRS_AA solves a system of linear equations A*X = B with a complex
 symmetric matrix A using the factorization A = U*T*U**T or
 A = L*T*L**T computed by CSYTRF_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*U**T;
          = '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 REAL array, dimension (LDA,N)
          Details of factors computed by CSYTRF_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 CSYTRF_AA.

B

          B is REAL 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 array, dimension (MAX(1,LWORK))

LWORK

          LWORK is INTEGER, LWORK >= MAX(1,3*N-2).

 param[out] INFO
 verbatim
          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.

Date:

November 2017

Definition at line 131 of file csytrs_aa.f.