serrbd.f

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*> \brief \b SERRBD
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at 
*            http://www.netlib.org/lapack/explore-html/ 
*
*  Definition:
*  ===========
*
*       SUBROUTINE SERRBD( PATH, NUNIT )
* 
*       .. Scalar Arguments ..
*       CHARACTER*3        PATH
*       INTEGER            NUNIT
*       ..
*  
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> SERRBD tests the error exits for SGEBRD, SORGBR, SORMBR, SBDSQR and
*> SBDSDC.
*> \endverbatim
*
*  Arguments:
*  ==========
*
*> \param[in] PATH
*> \verbatim
*>          PATH is CHARACTER*3
*>          The LAPACK path name for the routines to be tested.
*> \endverbatim
*>
*> \param[in] NUNIT
*> \verbatim
*>          NUNIT is INTEGER
*>          The unit number for output.
*> \endverbatim
*
*  Authors:
*  ========
*
*> \author Univ. of Tennessee 
*> \author Univ. of California Berkeley 
*> \author Univ. of Colorado Denver 
*> \author NAG Ltd. 
*
*> \date November 2011
*
*> \ingroup single_eig
*
*  =====================================================================
      SUBROUTINE serrbd( PATH, NUNIT )
*
*  -- LAPACK test routine (version 3.4.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      CHARACTER*3        path
      INTEGER            nunit
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            nmax, lw
      parameter( nmax = 4, lw = nmax )
*     ..
*     .. Local Scalars ..
      CHARACTER*2        c2
      INTEGER            i, info, j, nt
*     ..
*     .. Local Arrays ..
      INTEGER            iq( nmax, nmax ), iw( nmax )
      REAL               a( nmax, nmax ), d( nmax ), e( nmax ),
     $                   q( nmax, nmax ), tp( nmax ), tq( nmax ),
     $                   u( nmax, nmax ), v( nmax, nmax ), w( lw )
*     ..
*     .. External Functions ..
      LOGICAL            lsamen
      EXTERNAL           lsamen
*     ..
*     .. External Subroutines ..
      EXTERNAL           chkxer, sbdsdc, sbdsqr, sgebd2, sgebrd, sorgbr,
     $                   sormbr
*     ..
*     .. Scalars in Common ..
      LOGICAL            lerr, ok
      CHARACTER*32       srnamt
      INTEGER            infot, nout
*     ..
*     .. Common blocks ..
      common             / infoc / infot, nout, ok, lerr
      common             / srnamc / srnamt
*     ..
*     .. Intrinsic Functions ..
      INTRINSIC          real
*     ..
*     .. Executable Statements ..
*
      nout = nunit
      WRITE( nout, fmt = * )
      c2 = path( 2: 3 )
*
*     Set the variables to innocuous values.
*
      DO 20 j = 1, nmax
         DO 10 i = 1, nmax
            a( i, j ) = 1. / REAL( i+j )
   10    continue
   20 continue
      ok = .true.
      nt = 0
*
*     Test error exits of the SVD routines.
*
      IF( lsamen( 2, c2, 'BD' ) ) THEN
*
*        SGEBRD
*
         srnamt = 'SGEBRD'
         infot = 1
         CALL sgebrd( -1, 0, a, 1, d, e, tq, tp, w, 1, info )
         CALL chkxer( 'SGEBRD', infot, nout, lerr, ok )
         infot = 2
         CALL sgebrd( 0, -1, a, 1, d, e, tq, tp, w, 1, info )
         CALL chkxer( 'SGEBRD', infot, nout, lerr, ok )
         infot = 4
         CALL sgebrd( 2, 1, a, 1, d, e, tq, tp, w, 2, info )
         CALL chkxer( 'SGEBRD', infot, nout, lerr, ok )
         infot = 10
         CALL sgebrd( 2, 1, a, 2, d, e, tq, tp, w, 1, info )
         CALL chkxer( 'SGEBRD', infot, nout, lerr, ok )
         nt = nt + 4
*
*        SGEBD2
*
         srnamt = 'SGEBD2'
         infot = 1
         CALL sgebd2( -1, 0, a, 1, d, e, tq, tp, w, info )
         CALL chkxer( 'SGEBD2', infot, nout, lerr, ok )
         infot = 2
         CALL sgebd2( 0, -1, a, 1, d, e, tq, tp, w, info )
         CALL chkxer( 'SGEBD2', infot, nout, lerr, ok )
         infot = 4
         CALL sgebd2( 2, 1, a, 1, d, e, tq, tp, w, info )
         CALL chkxer( 'SGEBD2', infot, nout, lerr, ok )
         nt = nt + 3
*
*        SORGBR
*
         srnamt = 'SORGBR'
         infot = 1
         CALL sorgbr( '/', 0, 0, 0, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 2
         CALL sorgbr( 'Q', -1, 0, 0, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 3
         CALL sorgbr( 'Q', 0, -1, 0, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 3
         CALL sorgbr( 'Q', 0, 1, 0, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 3
         CALL sorgbr( 'Q', 1, 0, 1, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 3
         CALL sorgbr( 'P', 1, 0, 0, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 3
         CALL sorgbr( 'P', 0, 1, 1, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 4
         CALL sorgbr( 'Q', 0, 0, -1, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 6
         CALL sorgbr( 'Q', 2, 1, 1, a, 1, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         infot = 9
         CALL sorgbr( 'Q', 2, 2, 1, a, 2, tq, w, 1, info )
         CALL chkxer( 'SORGBR', infot, nout, lerr, ok )
         nt = nt + 10
*
*        SORMBR
*
         srnamt = 'SORMBR'
         infot = 1
         CALL sormbr( '/', 'L', 'T', 0, 0, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 2
         CALL sormbr( 'Q', '/', 'T', 0, 0, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 3
         CALL sormbr( 'Q', 'L', '/', 0, 0, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 4
         CALL sormbr( 'Q', 'L', 'T', -1, 0, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 5
         CALL sormbr( 'Q', 'L', 'T', 0, -1, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 6
         CALL sormbr( 'Q', 'L', 'T', 0, 0, -1, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 8
         CALL sormbr( 'Q', 'L', 'T', 2, 0, 0, a, 1, tq, u, 2, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 8
         CALL sormbr( 'Q', 'R', 'T', 0, 2, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 8
         CALL sormbr( 'P', 'L', 'T', 2, 0, 2, a, 1, tq, u, 2, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 8
         CALL sormbr( 'P', 'R', 'T', 0, 2, 2, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 11
         CALL sormbr( 'Q', 'R', 'T', 2, 0, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 13
         CALL sormbr( 'Q', 'L', 'T', 0, 2, 0, a, 1, tq, u, 1, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         infot = 13
         CALL sormbr( 'Q', 'R', 'T', 2, 0, 0, a, 1, tq, u, 2, w, 1,
     $                info )
         CALL chkxer( 'SORMBR', infot, nout, lerr, ok )
         nt = nt + 13
*
*        SBDSQR
*
         srnamt = 'SBDSQR'
         infot = 1
         CALL sbdsqr( '/', 0, 0, 0, 0, d, e, v, 1, u, 1, a, 1, w, info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 2
         CALL sbdsqr( 'U', -1, 0, 0, 0, d, e, v, 1, u, 1, a, 1, w,
     $                info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 3
         CALL sbdsqr( 'U', 0, -1, 0, 0, d, e, v, 1, u, 1, a, 1, w,
     $                info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 4
         CALL sbdsqr( 'U', 0, 0, -1, 0, d, e, v, 1, u, 1, a, 1, w,
     $                info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 5
         CALL sbdsqr( 'U', 0, 0, 0, -1, d, e, v, 1, u, 1, a, 1, w,
     $                info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 9
         CALL sbdsqr( 'U', 2, 1, 0, 0, d, e, v, 1, u, 1, a, 1, w, info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 11
         CALL sbdsqr( 'U', 0, 0, 2, 0, d, e, v, 1, u, 1, a, 1, w, info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         infot = 13
         CALL sbdsqr( 'U', 2, 0, 0, 1, d, e, v, 1, u, 1, a, 1, w, info )
         CALL chkxer( 'SBDSQR', infot, nout, lerr, ok )
         nt = nt + 8
*
*        SBDSDC
*
         srnamt = 'SBDSDC'
         infot = 1
         CALL sbdsdc( '/', 'N', 0, d, e, u, 1, v, 1, q, iq, w, iw,
     $                info )
         CALL chkxer( 'SBDSDC', infot, nout, lerr, ok )
         infot = 2
         CALL sbdsdc( 'U', '/', 0, d, e, u, 1, v, 1, q, iq, w, iw,
     $                info )
         CALL chkxer( 'SBDSDC', infot, nout, lerr, ok )
         infot = 3
         CALL sbdsdc( 'U', 'N', -1, d, e, u, 1, v, 1, q, iq, w, iw,
     $                info )
         CALL chkxer( 'SBDSDC', infot, nout, lerr, ok )
         infot = 7
         CALL sbdsdc( 'U', 'I', 2, d, e, u, 1, v, 1, q, iq, w, iw,
     $                info )
         CALL chkxer( 'SBDSDC', infot, nout, lerr, ok )
         infot = 9
         CALL sbdsdc( 'U', 'I', 2, d, e, u, 2, v, 1, q, iq, w, iw,
     $                info )
         CALL chkxer( 'SBDSDC', infot, nout, lerr, ok )
         nt = nt + 5
      END IF
*
*     Print a summary line.
*
      IF( ok ) THEN
         WRITE( nout, fmt = 9999 )path, nt
      ELSE
         WRITE( nout, fmt = 9998 )path
      END IF
*
 9999 format( 1x, a3, ' routines passed the tests of the error exits',
     $      ' (', i3, ' tests done)' )
 9998 format( ' *** ', a3, ' routines failed the tests of the error ',
     $      'exits ***' )
*
      return
*
*     End of SERRBD
*
      END