DragonFly On-Line Manual Pages

zgetrs.f(3)                         LAPACK                         zgetrs.f(3)

NAME
       zgetrs.f -

SYNOPSIS
   Functions/Subroutines
       subroutine zgetrs (TRANS, N, NRHS, A, LDA, IPIV, B, LDB, INFO)
           ZGETRS

Function/Subroutine Documentation
   subroutine zgetrs (characterTRANS, integerN, integerNRHS, complex*16,
       dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV,
       complex*16, dimension( ldb, * )B, integerLDB, integerINFO)
       ZGETRS

       Purpose:

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

       Parameters:
           TRANS

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

           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 COMPLEX*16 array, dimension (LDA,N)
                     The factors L and U from the factorization A = P*L*U
                     as computed by ZGETRF.

           LDA

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

           IPIV

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

           B

                     B is COMPLEX*16 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).

           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.

       Date:
           November 2011

       Definition at line 122 of file zgetrs.f.

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

Version 3.4.2                   Sat Nov 16 2013                    zgetrs.f(3)