serrqr.f

Go to the documentation of this file.

      SUBROUTINE serrqr( PATH, NUNIT )
*
      include 'plasmaf.h'
*
*  -- LAPACK test routine (version 3.1) --
*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
*     November 2006
*
*     .. Scalar Arguments ..
      CHARACTER*3        path
      INTEGER            nunit
*     ..
*
*  Purpose
*  =======
*
*  SERRQR tests the error exits for the REAL routines
*  that use the QR decomposition of a general matrix.
*
*  Arguments
*  =========
*
*  PATH    (input) CHARACTER*3
*          The LAPACK path name for the routines to be tested.
*
*  NUNIT   (input) INTEGER
*          The unit number for output.
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            nmax
      parameter( nmax = 2 )
*     ..
*     .. Local Scalars ..
      INTEGER            i, info, j
*     ..
*     .. Local Arrays ..
      REAL               a( nmax, nmax ), af( nmax, nmax ), b( nmax ),
     $                   w( nmax ), x( nmax )
      INTEGER           ht( 2 )
*     ..
*     .. External Subroutines ..
      EXTERNAL           alaesm, chkxer, sgeqr2, sgeqrf, sorg2r,
     $                   sorgqr, sorm2r, sormqr
*     ..
*     .. 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 = * )
*
*     Disable PLASMA warnings/errors
* 
      CALL plasma_disable( plasma_warnings, info )
      CALL plasma_disable( plasma_errors,   info )
*
*     Set the variables to innocuous values.
*
      DO 20 j = 1, nmax
         DO 10 i = 1, nmax
            a( i, j ) = 1. / REAL( i+j )
            af( i, j ) = 1. / REAL( i+j )
   10    continue
         b( j ) = 0.
         w( j ) = 0.
         x( j ) = 0.
   20 continue
      ok = .true.
*
*     Allocate HT
*
      CALL plasma_alloc_workspace_sgeqrf( 2, 2, ht, info )

*
*     Error exits for QR factorization
*
*     SGEQRF
*
      srnamt = 'SGEQRF'
      infot = 1
      CALL plasma_sgeqrf( -1, 0, a, 1, ht, info )
      CALL chkxer( 'SGEQRF', infot, nout, info, ok )
      infot = 2
      CALL plasma_sgeqrf( 0, -1, a, 1, ht, info )
      CALL chkxer( 'SGEQRF', infot, nout, info, ok )
      infot = 4
      CALL plasma_sgeqrf( 2, 1, a, 1, ht, info )
      CALL chkxer( 'SGEQRF', infot, nout, info, ok )
*
*     SGEQRS
*
*
      srnamt = 'SGEQRS'
      infot = 1
      CALL plasma_sgeqrs( -1, 0, 0, a, 1, x, b, 1, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
      infot = 2
      CALL plasma_sgeqrs( 0, -1, 0, a, 1, x, b, 1, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
      infot = 2
      CALL plasma_sgeqrs( 1, 2, 0, a, 2, x, b, 2, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
      infot = 3
      CALL plasma_sgeqrs( 0, 0, -1, a, 1, x, b, 1, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
      infot = 5
      CALL plasma_sgeqrs( 2, 1, 0, a, 1, x, b, 2, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
      infot = 8
      CALL plasma_sgeqrs( 2, 1, 0, a, 2, x, b, 1, info )
      CALL chkxer( 'SGEQRS', infot, nout, info, ok )
*
*     SORGQR
*
      srnamt = 'SORGQR'
      infot = 1
      CALL plasma_sorgqr( -1, 0, 0, a, 1, ht, w, 1, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 2
      CALL plasma_sorgqr( 0, -1, 0, a, 1, ht, w, 1, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 2
      CALL plasma_sorgqr( 1, 2, 0, a, 1, ht, w, 2, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 3
      CALL plasma_sorgqr( 0, 0, -1, a, 1, ht, w, 1, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 3
      CALL plasma_sorgqr( 1, 1, 2, a, 1, ht, w, 1, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 5
      CALL plasma_sorgqr( 2, 2, 0, a, 1, ht, w, 2, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
      infot = 8
      CALL plasma_sorgqr( 2, 2, 0, a, 2, ht, w, 1, info )
      CALL chkxer( 'SORGQR', infot, nout, info, ok )
*
*     PLASMA_SORMQR
*
      srnamt = 'SORMQR'
      infot = 1
      CALL plasma_sormqr( '/', plasmatrans, 0, 0, 0, a, 1, ht, af, 1,
     4                   info )
      CALL chkxer( 'SORMQR', infot, nout, info, ok )
      infot = 2
      CALL plasma_sormqr( plasmaleft, '/', 0, 0, 0, a, 1, ht, af, 1,
     4                   info )
      CALL chkxer( 'SORMQR', infot, nout, info, ok )
      infot = 3
      CALL plasma_sormqr( plasmaleft, plasmatrans, -1, 0, 0, a, 1, ht,
     4                   af, 1, info )
      CALL chkxer( 'SORMQR', infot, nout, info, ok )
      infot = 4
      CALL plasma_sormqr( plasmaleft, plasmatrans, 0, -1, 0, a, 1, ht,
     4                   af, 1, info )
      CALL chkxer( 'SORMQR', infot, nout, info, ok )
      infot = 5
      CALL plasma_sormqr( plasmaleft, plasmatrans, 0, 0, -1, a, 1, ht,
     4                   af, 1, info )
      CALL chkxer( 'SORMQR', infot, nout, info, ok )
*      INFOT = 5
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 0, 1, 1, A, 1, HT,
*     4                   AF, 1, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*      INFOT = 5
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 1, 0, 1, A, 1, HT,
*     4                   AF, 1, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*      INFOT = 7
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 2, 1, 0, A, 1, HT,
*     4                   AF, 2, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*      INFOT = 7
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 1, 2, 0, A, 1, HT,
*     4                   AF, 1, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*      INFOT = 10
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 1, 2, 0, A, 1, HT,
*     4                   AF, 1, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*      INFOT = 10
*      CALL PLASMA_SORMQR( PLASMALEFT, PLASMATRANS, 2, 1, 0, A, 1, HT,
*     4                   AF, 2, INFO )
*      CALL CHKXER( 'SORMQR', INFOT, NOUT, INFO, OK )
*
*     Print a summary line.
*
      CALL alaesm( path, ok, nout )
*
*     Deallocate HT
*
      CALL plasma_dealloc_handle( ht, info )
*
*     Enable PLASMA warnings/errors
* 
      CALL plasma_enable( plasma_warnings, info )
      CALL plasma_enable( plasma_errors,   info )
*
      return
*
*     End of SERRQR
*
      END