derrorhr_col()

subroutine derrorhr_col	(	character(len=3)	path,
		integer	nunit
	)

DERRORHR_COL

Purpose:

 DERRORHR_COL tests the error exits for DORHR_COL that does
 Householder reconstruction from the output of tall-skinny
 factorization DLATSQR.

Parameters

[in]	PATH	PATH is CHARACTER*3 The LAPACK path name for the routines to be tested.
[in]	NUNIT	NUNIT is INTEGER The unit number for output.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 55 of file derrorhr_col.f.

      IMPLICIT NONE
*
*  -- LAPACK test routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      CHARACTER(LEN=3)   PATH
      INTEGER            NUNIT
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            NMAX
      parameter( nmax = 2 )
*     ..
*     .. Local Scalars ..
      INTEGER            I, INFO, J
*     ..
*     .. Local Arrays ..
      DOUBLE PRECISION   A( NMAX, NMAX ), T( NMAX, NMAX ), D(NMAX)
*     ..
*     .. External Subroutines ..
      EXTERNAL           alaesm, chkxer, dorhr_col
*     ..
*     .. Scalars in Common ..
      LOGICAL            LERR, OK
      CHARACTER(LEN=32)  SRNAMT
      INTEGER            INFOT, NOUT
*     ..
*     .. Common blocks ..
      COMMON             / infoc / infot, nout, ok, lerr
      COMMON             / srnamc / srnamt
*     ..
*     .. Intrinsic Functions ..
      INTRINSIC          dble
*     ..
*     .. Executable Statements ..
*
      nout = nunit
      WRITE( nout, fmt = * )
*
*     Set the variables to innocuous values.
*
      DO j = 1, nmax
         DO i = 1, nmax
            a( i, j ) = 1.d+0 / dble( i+j )
            t( i, j ) = 1.d+0 / dble( i+j )
         END DO
         d( j ) = 0.d+0
      END DO
      ok = .true.
*
*     Error exits for Householder reconstruction
*
*     DORHR_COL
*
      srnamt = 'DORHR_COL'
*
      infot = 1
      CALL dorhr_col( -1, 0, 1, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      infot = 2
      CALL dorhr_col( 0, -1, 1, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
      CALL dorhr_col( 1, 2, 1, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      infot = 3
      CALL dorhr_col( 0, 0, -1, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      CALL dorhr_col( 0, 0, 0, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      infot = 5
      CALL dorhr_col( 0, 0, 1, a, -1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      CALL dorhr_col( 0, 0, 1, a, 0, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      CALL dorhr_col( 2, 0, 1, a, 1, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      infot = 7
      CALL dorhr_col( 0, 0, 1, a, 1, t, -1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      CALL dorhr_col( 0, 0, 1, a, 1, t, 0, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
      CALL dorhr_col( 4, 3, 2, a, 4, t, 1, d, info )
      CALL chkxer( 'DORHR_COL', infot, nout, lerr, ok )
*
*     Print a summary line.
*
      CALL alaesm( path, ok, nout )
*
      RETURN
*
*     End of DERRORHR_COL
*

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