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 ouput 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.

Date

November 2019

Definition at line 58 of file derrorhr_col.f.

      IMPLICIT NONE
*
*  -- LAPACK test routine (version 3.9.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2019
*
*     .. 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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