
meigen(1)                    Khoros                     meigen(1)

PROGRAM
     meigen - computes the eigenvalues and eigenvectors of a
     square matrix.

SYNTAX
     meigen

     -i             input file (matrix file)

     [-o1]          resulting eigenvector output file (matrix
                    file)

     [-o2]          resulting eigenvalue output file (matrix
                    file)

     [-j]           define arithmetic on data

     [-V]           Gives the version for meigen

     [-U]           Gives the usage for meigen

     [-P]           Prompts for command line options

     [-A [file1]]   Creates the answer file called meigen.ans or
                    file1

     [-a [file1]]   Uses meigen.ans or file1 as the answer file

DESCRIPTION
     computes the eigenvectors and eigenvalues of a real or com-
     plex square matrix.

     The input matrices are expected to be n by n, where n is any
     non zero, positive integer.  One matrix is allowed per band.
     The output consists of two sets of information, the eigen-
     vectors, and the eigenvalues.  These are placed in separate
     files. If the Eigenvalues are output to a file, then they
     will be output as a diagonal matrix.  If the Eigenvectors
     are output, they will be output as a single matrix consist-
     ing of column eigenvectors. The eigenvector in a given
     column corresponds to the Eigenvalue in that same column.

REQUIRED ARGUMENTS
     -i     type: infile
            desc: input file (matrix file)

OPTIONAL ARGUMENTS
     -o1    type: outfile
            desc: resulting eigenvector output file (matrix file)

     -o2    type: outfile
            desc: resulting eigenvalue output file (matrix file)

     -j     type: boolean
            desc: define arithmetic on data
            default: true

EXAMPLES
SEE ALSO
     intro(1), verror(3), vgparms(3), vutils(3), lmeigen(3)

RESTRICTIONS
COPYRIGHT
     Copyright 1992, University of New Mexico.  All rights
     reserved.

Khoros                    Release: 1.0                          1

