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SUBROUTINE DERRTZ( PATH, NUNIT )
*
* -- LAPACK test routine (version 3.0) --
* Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
* Courant Institute, Argonne National Lab, and Rice University
* June 30, 1999
*
* .. Scalar Arguments ..
CHARACTER*3 PATH
INTEGER NUNIT
* ..
*
* Purpose
* =======
*
* DERRTZ tests the error exits for DTZRQF and STZRZF.
*
* 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 ..
CHARACTER*2 C2
INTEGER INFO
* ..
* .. Local Arrays ..
DOUBLE PRECISION A( NMAX, NMAX ), TAU( NMAX ), W( NMAX )
* ..
* .. External Functions ..
LOGICAL LSAMEN
EXTERNAL LSAMEN
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, DTZRQF, DTZRZF
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER*6 SRNAMT
INTEGER INFOT, NOUT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
C2 = PATH( 2: 3 )
A( 1, 1 ) = 1.D+0
A( 1, 2 ) = 2.D+0
A( 2, 2 ) = 3.D+0
A( 2, 1 ) = 4.D+0
W( 1 ) = 0.0D+0
W( 2 ) = 0.0D+0
OK = .TRUE.
*
IF( LSAMEN( 2, C2, 'TZ' ) ) THEN
*
* Test error exits for the trapezoidal routines.
*
* DTZRQF
*
SRNAMT = 'DTZRQF'
INFOT = 1
CALL DTZRQF( -1, 0, A, 1, TAU, INFO )
CALL CHKXER( 'DTZRQF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DTZRQF( 1, 0, A, 1, TAU, INFO )
CALL CHKXER( 'DTZRQF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DTZRQF( 2, 2, A, 1, TAU, INFO )
CALL CHKXER( 'DTZRQF', INFOT, NOUT, LERR, OK )
*
* DTZRZF
*
SRNAMT = 'DTZRZF'
INFOT = 1
CALL DTZRZF( -1, 0, A, 1, TAU, W, 1, INFO )
CALL CHKXER( 'DTZRZF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DTZRZF( 1, 0, A, 1, TAU, W, 1, INFO )
CALL CHKXER( 'DTZRZF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DTZRZF( 2, 2, A, 1, TAU, W, 1, INFO )
CALL CHKXER( 'DTZRZF', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DTZRZF( 2, 2, A, 2, TAU, W, 1, INFO )
CALL CHKXER( 'DTZRZF', INFOT, NOUT, LERR, OK )
END IF
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of DERRTZ
*
END
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