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253 lines
7.4 KiB
253 lines
7.4 KiB
*> \brief \b ZERRGT
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*
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* =========== DOCUMENTATION ===========
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*
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* Online html documentation available at
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* http://www.netlib.org/lapack/explore-html/
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*
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* Definition:
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* ===========
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*
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* SUBROUTINE ZERRGT( PATH, NUNIT )
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*
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* .. Scalar Arguments ..
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* CHARACTER*3 PATH
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* INTEGER NUNIT
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* ..
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*
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*
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*> \par Purpose:
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* =============
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*>
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*> \verbatim
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*>
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*> ZERRGT tests the error exits for the COMPLEX*16 tridiagonal
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*> routines.
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*> \endverbatim
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*
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* Arguments:
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* ==========
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*
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*> \param[in] PATH
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*> \verbatim
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*> PATH is CHARACTER*3
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*> The LAPACK path name for the routines to be tested.
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*> \endverbatim
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*>
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*> \param[in] NUNIT
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*> \verbatim
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*> NUNIT is INTEGER
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*> The unit number for output.
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*> \endverbatim
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*
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* Authors:
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* ========
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*
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*> \author Univ. of Tennessee
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*> \author Univ. of California Berkeley
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*> \author Univ. of Colorado Denver
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*> \author NAG Ltd.
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*
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*> \ingroup complex16_lin
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*
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* =====================================================================
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SUBROUTINE ZERRGT( PATH, NUNIT )
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*
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* -- LAPACK test routine --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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*
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* .. Scalar Arguments ..
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CHARACTER*3 PATH
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INTEGER NUNIT
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* ..
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*
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* =====================================================================
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*
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* .. Parameters ..
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INTEGER NMAX
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PARAMETER ( NMAX = 2 )
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* ..
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* .. Local Scalars ..
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CHARACTER*2 C2
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INTEGER I, INFO
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DOUBLE PRECISION ANORM, RCOND
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* ..
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* .. Local Arrays ..
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INTEGER IP( NMAX )
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DOUBLE PRECISION D( NMAX ), DF( NMAX ), R1( NMAX ), R2( NMAX ),
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$ RW( NMAX )
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COMPLEX*16 B( NMAX ), DL( NMAX ), DLF( NMAX ), DU( NMAX ),
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$ DU2( NMAX ), DUF( NMAX ), E( NMAX ),
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$ EF( NMAX ), W( NMAX ), X( NMAX )
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* ..
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* .. External Functions ..
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LOGICAL LSAMEN
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EXTERNAL LSAMEN
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* ..
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* .. External Subroutines ..
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EXTERNAL ALAESM, CHKXER, ZGTCON, ZGTRFS, ZGTTRF, ZGTTRS,
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$ ZPTCON, ZPTRFS, ZPTTRF, ZPTTRS
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* ..
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* .. Scalars in Common ..
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LOGICAL LERR, OK
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CHARACTER*32 SRNAMT
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INTEGER INFOT, NOUT
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* ..
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* .. Common blocks ..
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COMMON / INFOC / INFOT, NOUT, OK, LERR
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Executable Statements ..
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*
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NOUT = NUNIT
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WRITE( NOUT, FMT = * )
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C2 = PATH( 2: 3 )
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DO 10 I = 1, NMAX
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D( I ) = 1.D0
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E( I ) = 2.D0
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DL( I ) = 3.D0
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DU( I ) = 4.D0
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10 CONTINUE
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ANORM = 1.0D0
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OK = .TRUE.
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*
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IF( LSAMEN( 2, C2, 'GT' ) ) THEN
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*
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* Test error exits for the general tridiagonal routines.
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*
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* ZGTTRF
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*
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SRNAMT = 'ZGTTRF'
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INFOT = 1
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CALL ZGTTRF( -1, DL, E, DU, DU2, IP, INFO )
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CALL CHKXER( 'ZGTTRF', INFOT, NOUT, LERR, OK )
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*
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* ZGTTRS
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*
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SRNAMT = 'ZGTTRS'
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INFOT = 1
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CALL ZGTTRS( '/', 0, 0, DL, E, DU, DU2, IP, X, 1, INFO )
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CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL ZGTTRS( 'N', -1, 0, DL, E, DU, DU2, IP, X, 1, INFO )
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CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL ZGTTRS( 'N', 0, -1, DL, E, DU, DU2, IP, X, 1, INFO )
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CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 10
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CALL ZGTTRS( 'N', 2, 1, DL, E, DU, DU2, IP, X, 1, INFO )
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CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
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*
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* ZGTRFS
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*
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SRNAMT = 'ZGTRFS'
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INFOT = 1
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CALL ZGTRFS( '/', 0, 0, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 1,
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$ X, 1, R1, R2, W, RW, INFO )
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CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL ZGTRFS( 'N', -1, 0, DL, E, DU, DLF, EF, DUF, DU2, IP, B,
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$ 1, X, 1, R1, R2, W, RW, INFO )
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CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL ZGTRFS( 'N', 0, -1, DL, E, DU, DLF, EF, DUF, DU2, IP, B,
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$ 1, X, 1, R1, R2, W, RW, INFO )
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CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 13
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CALL ZGTRFS( 'N', 2, 1, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 1,
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$ X, 2, R1, R2, W, RW, INFO )
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CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 15
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CALL ZGTRFS( 'N', 2, 1, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 2,
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$ X, 1, R1, R2, W, RW, INFO )
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CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
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*
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* ZGTCON
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*
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SRNAMT = 'ZGTCON'
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INFOT = 1
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CALL ZGTCON( '/', 0, DL, E, DU, DU2, IP, ANORM, RCOND, W,
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$ INFO )
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CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL ZGTCON( 'I', -1, DL, E, DU, DU2, IP, ANORM, RCOND, W,
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$ INFO )
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CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
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INFOT = 8
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CALL ZGTCON( 'I', 0, DL, E, DU, DU2, IP, -ANORM, RCOND, W,
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$ INFO )
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CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
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*
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ELSE IF( LSAMEN( 2, C2, 'PT' ) ) THEN
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*
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* Test error exits for the positive definite tridiagonal
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* routines.
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*
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* ZPTTRF
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*
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SRNAMT = 'ZPTTRF'
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INFOT = 1
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CALL ZPTTRF( -1, D, E, INFO )
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CALL CHKXER( 'ZPTTRF', INFOT, NOUT, LERR, OK )
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*
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* ZPTTRS
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*
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SRNAMT = 'ZPTTRS'
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INFOT = 1
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CALL ZPTTRS( '/', 1, 0, D, E, X, 1, INFO )
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CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL ZPTTRS( 'U', -1, 0, D, E, X, 1, INFO )
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CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL ZPTTRS( 'U', 0, -1, D, E, X, 1, INFO )
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CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 7
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CALL ZPTTRS( 'U', 2, 1, D, E, X, 1, INFO )
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CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
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*
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* ZPTRFS
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*
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SRNAMT = 'ZPTRFS'
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INFOT = 1
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CALL ZPTRFS( '/', 1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
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$ RW, INFO )
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CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL ZPTRFS( 'U', -1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
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$ RW, INFO )
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CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL ZPTRFS( 'U', 0, -1, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
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$ RW, INFO )
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CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 9
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CALL ZPTRFS( 'U', 2, 1, D, E, DF, EF, B, 1, X, 2, R1, R2, W,
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$ RW, INFO )
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CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 11
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CALL ZPTRFS( 'U', 2, 1, D, E, DF, EF, B, 2, X, 1, R1, R2, W,
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$ RW, INFO )
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CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
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*
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* ZPTCON
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*
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SRNAMT = 'ZPTCON'
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INFOT = 1
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CALL ZPTCON( -1, D, E, ANORM, RCOND, RW, INFO )
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CALL CHKXER( 'ZPTCON', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL ZPTCON( 0, D, E, -ANORM, RCOND, RW, INFO )
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CALL CHKXER( 'ZPTCON', INFOT, NOUT, LERR, OK )
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END IF
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*
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* Print a summary line.
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*
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CALL ALAESM( PATH, OK, NOUT )
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*
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RETURN
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*
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* End of ZERRGT
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*
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END
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