zerrtz()

subroutine zerrtz	(	character*3	path,
		integer	nunit
	)

ZERRTZ

Purpose:

 ZERRTZ tests the error exits for ZTZRZF.

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 53 of file zerrtz.f.

*
*  -- 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*3        PATH
      INTEGER            NUNIT
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            NMAX
      parameter( nmax = 2 )
*     ..
*     .. Local Scalars ..
      CHARACTER*2        C2
      INTEGER            INFO
*     ..
*     .. Local Arrays ..
      COMPLEX*16         A( NMAX, NMAX ), TAU( NMAX ), W( NMAX )
*     ..
*     .. External Functions ..
      LOGICAL            LSAMEN
      EXTERNAL           lsamen
*     ..
*     .. External Subroutines ..
      EXTERNAL           alaesm, chkxer, ztzrzf
*     ..
*     .. 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          dcmplx
*     ..
*     .. Executable Statements ..
*
      nout = nunit
      c2 = path( 2: 3 )
      a( 1, 1 ) = dcmplx( 1.d+0, -1.d+0 )
      a( 1, 2 ) = dcmplx( 2.d+0, -2.d+0 )
      a( 2, 2 ) = dcmplx( 3.d+0, -3.d+0 )
      a( 2, 1 ) = dcmplx( 4.d+0, -4.d+0 )
      w( 1 ) = dcmplx( 0.d+0, 0.d+0 )
      w( 2 ) = dcmplx( 0.d+0, 0.d+0 )
      ok = .true.
*
*     Test error exits for the trapezoidal routines.
      WRITE( nout, fmt = * )
      IF( lsamen( 2, c2, 'TZ' ) ) THEN
*
*
*        ZTZRZF
*
         srnamt = 'ZTZRZF'
         infot = 1
         CALL ztzrzf( -1, 0, a, 1, tau, w, 1, info )
         CALL chkxer( 'ZTZRZF', infot, nout, lerr, ok )
         infot = 2
         CALL ztzrzf( 1, 0, a, 1, tau, w, 1, info )
         CALL chkxer( 'ZTZRZF', infot, nout, lerr, ok )
         infot = 4
         CALL ztzrzf( 2, 2, a, 1, tau, w, 1, info )
         CALL chkxer( 'ZTZRZF', infot, nout, lerr, ok )
         infot = 7
         CALL ztzrzf( 2, 2, a, 2, tau, w, 0, info )
         CALL chkxer( 'ZTZRZF', infot, nout, lerr, ok )
         infot = 7
         CALL ztzrzf( 2, 3, a, 2, tau, w, 1, info )
         CALL chkxer( 'ZTZRZF', infot, nout, lerr, ok )
      END IF
*
*     Print a summary line.
*
      CALL alaesm( path, ok, nout )
*
      RETURN
*
*     End of ZERRTZ
*

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