205 lines
6.1 KiB
FortranFixed
205 lines
6.1 KiB
FortranFixed
SUBROUTINE DERRGT( PATH, NUNIT )
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*
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* -- LAPACK test routine (version 3.1) --
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* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
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* November 2006
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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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* Purpose
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* =======
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*
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* DERRGT tests the error exits for the DOUBLE PRECISION tridiagonal
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* routines.
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*
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* Arguments
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* =========
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*
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* PATH (input) CHARACTER*3
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* The LAPACK path name for the routines to be tested.
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*
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* NUNIT (input) INTEGER
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* The unit number for output.
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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 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 ), IW( NMAX )
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DOUBLE PRECISION B( NMAX ), C( NMAX ), CF( NMAX ), D( NMAX ),
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$ DF( NMAX ), E( NMAX ), EF( NMAX ), F( NMAX ),
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$ R1( NMAX ), R2( 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, DGTCON, DGTRFS, DGTTRF, DGTTRS,
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$ DPTCON, DPTRFS, DPTTRF, DPTTRS
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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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D( 1 ) = 1.D0
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D( 2 ) = 2.D0
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DF( 1 ) = 1.D0
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DF( 2 ) = 2.D0
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E( 1 ) = 3.D0
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E( 2 ) = 4.D0
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EF( 1 ) = 3.D0
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EF( 2 ) = 4.D0
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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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* DGTTRF
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*
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SRNAMT = 'DGTTRF'
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INFOT = 1
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CALL DGTTRF( -1, C, D, E, F, IP, INFO )
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CALL CHKXER( 'DGTTRF', INFOT, NOUT, LERR, OK )
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*
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* DGTTRS
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*
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SRNAMT = 'DGTTRS'
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INFOT = 1
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CALL DGTTRS( '/', 0, 0, C, D, E, F, IP, X, 1, INFO )
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CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DGTTRS( 'N', -1, 0, C, D, E, F, IP, X, 1, INFO )
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CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL DGTTRS( 'N', 0, -1, C, D, E, F, IP, X, 1, INFO )
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CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 10
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CALL DGTTRS( 'N', 2, 1, C, D, E, F, IP, X, 1, INFO )
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CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
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*
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* DGTRFS
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*
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SRNAMT = 'DGTRFS'
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INFOT = 1
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CALL DGTRFS( '/', 0, 0, C, D, E, CF, DF, EF, F, IP, B, 1, X, 1,
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$ R1, R2, W, IW, INFO )
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CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DGTRFS( 'N', -1, 0, C, D, E, CF, DF, EF, F, IP, B, 1, X,
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$ 1, R1, R2, W, IW, INFO )
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CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 3
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CALL DGTRFS( 'N', 0, -1, C, D, E, CF, DF, EF, F, IP, B, 1, X,
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$ 1, R1, R2, W, IW, INFO )
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CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 13
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CALL DGTRFS( 'N', 2, 1, C, D, E, CF, DF, EF, F, IP, B, 1, X, 2,
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$ R1, R2, W, IW, INFO )
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CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 15
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CALL DGTRFS( 'N', 2, 1, C, D, E, CF, DF, EF, F, IP, B, 2, X, 1,
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$ R1, R2, W, IW, INFO )
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CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
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*
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* DGTCON
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*
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SRNAMT = 'DGTCON'
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INFOT = 1
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CALL DGTCON( '/', 0, C, D, E, F, IP, ANORM, RCOND, W, IW,
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$ INFO )
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CALL CHKXER( 'DGTCON', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DGTCON( 'I', -1, C, D, E, F, IP, ANORM, RCOND, W, IW,
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$ INFO )
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CALL CHKXER( 'DGTCON', INFOT, NOUT, LERR, OK )
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INFOT = 8
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CALL DGTCON( 'I', 0, C, D, E, F, IP, -ANORM, RCOND, W, IW,
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$ INFO )
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CALL CHKXER( 'DGTCON', 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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* DPTTRF
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*
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SRNAMT = 'DPTTRF'
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INFOT = 1
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CALL DPTTRF( -1, D, E, INFO )
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CALL CHKXER( 'DPTTRF', INFOT, NOUT, LERR, OK )
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*
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* DPTTRS
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*
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SRNAMT = 'DPTTRS'
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INFOT = 1
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CALL DPTTRS( -1, 0, D, E, X, 1, INFO )
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CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DPTTRS( 0, -1, D, E, X, 1, INFO )
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CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
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INFOT = 6
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CALL DPTTRS( 2, 1, D, E, X, 1, INFO )
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CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
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*
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* DPTRFS
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*
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SRNAMT = 'DPTRFS'
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INFOT = 1
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CALL DPTRFS( -1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W, INFO )
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CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DPTRFS( 0, -1, D, E, DF, EF, B, 1, X, 1, R1, R2, W, INFO )
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CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 8
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CALL DPTRFS( 2, 1, D, E, DF, EF, B, 1, X, 2, R1, R2, W, INFO )
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CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
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INFOT = 10
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CALL DPTRFS( 2, 1, D, E, DF, EF, B, 2, X, 1, R1, R2, W, INFO )
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CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
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*
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* DPTCON
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*
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SRNAMT = 'DPTCON'
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INFOT = 1
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CALL DPTCON( -1, D, E, ANORM, RCOND, W, INFO )
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CALL CHKXER( 'DPTCON', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL DPTCON( 0, D, E, -ANORM, RCOND, W, INFO )
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CALL CHKXER( 'DPTCON', 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 DERRGT
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*
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END
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