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

NAME

       LAPACK-3  -  solves a system of linear equations  A * X = B or A**T * X = B with a general
       N-by-N matrix A using the LU factorization computed by SGETRF

SYNOPSIS

       SUBROUTINE SGETRS( TRANS, N, NRHS, A, LDA, IPIV, B, LDB, INFO )

           CHARACTER      TRANS

           INTEGER        INFO, LDA, LDB, N, NRHS

           INTEGER        IPIV( * )

           REAL           A( LDA, * ), B( LDB, * )

PURPOSE

       SGETRS solves a system of linear equations
          A * X = B  or  A**T * X = B with a general N-by-N matrix A using the  LU  factorization
       computed by SGETRF.

ARGUMENTS

        TRANS   (input) CHARACTER*1
                Specifies the form of the system of equations:
                = 'N':  A * X = B  (No transpose)
                = 'T':  A**T* X = B  (Transpose)
                = 'C':  A**T* X = B  (Conjugate transpose = Transpose)

        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) REAL array, dimension (LDA,N)
                The factors L and U from the factorization A = P*L*U
                as computed by SGETRF.

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

        IPIV    (input) INTEGER array, dimension (N)
                The pivot indices from SGETRF; for 1<=i<=N, row i of the
                matrix was interchanged with row IPIV(i).

        B       (input/output) REAL 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).

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

 LAPACK routine (version 3.3.1)             April 2011                            SGETRS(3lapack)