*> \brief \b DERRTZ * * =========== DOCUMENTATION =========== * * Online html documentation available at * http://www.netlib.org/lapack/explore-html/ * * Definition: * =========== * * SUBROUTINE DERRTZ( PATH, NUNIT ) * * .. Scalar Arguments .. * CHARACTER*3 PATH * INTEGER NUNIT * .. * * *> \par Purpose: * ============= *> *> \verbatim *> *> DERRTZ tests the error exits for STZRZF. *> \endverbatim * * Arguments: * ========== * *> \param[in] PATH *> \verbatim *> PATH is CHARACTER*3 *> The LAPACK path name for the routines to be tested. *> \endverbatim *> *> \param[in] NUNIT *> \verbatim *> NUNIT is INTEGER *> The unit number for output. *> \endverbatim * * Authors: * ======== * *> \author Univ. of Tennessee *> \author Univ. of California Berkeley *> \author Univ. of Colorado Denver *> \author NAG Ltd. * *> \ingroup double_lin * * ===================================================================== SUBROUTINE DERRTZ( PATH, NUNIT ) * * -- 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 .. DOUBLE PRECISION A( NMAX, NMAX ), TAU( NMAX ), W( NMAX ) * .. * .. External Functions .. LOGICAL LSAMEN EXTERNAL LSAMEN * .. * .. External Subroutines .. EXTERNAL ALAESM, CHKXER, DTZRZF * .. * .. Scalars in Common .. LOGICAL LERR, OK CHARACTER*32 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. * * 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, 0, INFO ) CALL CHKXER( 'DTZRZF', INFOT, NOUT, LERR, OK ) INFOT = 7 CALL DTZRZF( 2, 3, 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