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SUBROUTINE ZERRGT( 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
* =======
*
* ZERRGT tests the error exits for the COMPLEX*16 tridiagonal
* routines.
*
* 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 I, INFO
DOUBLE PRECISION ANORM, RCOND
* ..
* .. Local Arrays ..
INTEGER IP( NMAX )
DOUBLE PRECISION D( NMAX ), DF( NMAX ), R1( NMAX ), R2( NMAX ),
$ RW( NMAX )
COMPLEX*16 B( NMAX ), DL( NMAX ), DLF( NMAX ), DU( NMAX ),
$ DU2( NMAX ), DUF( NMAX ), E( NMAX ),
$ EF( NMAX ), W( NMAX ), X( NMAX )
* ..
* .. External Functions ..
LOGICAL LSAMEN
EXTERNAL LSAMEN
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, ZGTCON, ZGTRFS, ZGTTRF, ZGTTRS,
$ ZPTCON, ZPTRFS, ZPTTRF, ZPTTRS
* ..
* .. 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 )
DO 10 I = 1, NMAX
D( I ) = 1.D0
E( I ) = 2.D0
DL( I ) = 3.D0
DU( I ) = 4.D0
10 CONTINUE
ANORM = 1.0D0
OK = .TRUE.
*
IF( LSAMEN( 2, C2, 'GT' ) ) THEN
*
* Test error exits for the general tridiagonal routines.
*
* ZGTTRF
*
SRNAMT = 'ZGTTRF'
INFOT = 1
CALL ZGTTRF( -1, DL, E, DU, DU2, IP, INFO )
CALL CHKXER( 'ZGTTRF', INFOT, NOUT, LERR, OK )
*
* ZGTTRS
*
SRNAMT = 'ZGTTRS'
INFOT = 1
CALL ZGTTRS( '/', 0, 0, DL, E, DU, DU2, IP, X, 1, INFO )
CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL ZGTTRS( 'N', -1, 0, DL, E, DU, DU2, IP, X, 1, INFO )
CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL ZGTTRS( 'N', 0, -1, DL, E, DU, DU2, IP, X, 1, INFO )
CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL ZGTTRS( 'N', 2, 1, DL, E, DU, DU2, IP, X, 1, INFO )
CALL CHKXER( 'ZGTTRS', INFOT, NOUT, LERR, OK )
*
* ZGTRFS
*
SRNAMT = 'ZGTRFS'
INFOT = 1
CALL ZGTRFS( '/', 0, 0, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 1,
$ X, 1, R1, R2, W, RW, INFO )
CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL ZGTRFS( 'N', -1, 0, DL, E, DU, DLF, EF, DUF, DU2, IP, B,
$ 1, X, 1, R1, R2, W, RW, INFO )
CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL ZGTRFS( 'N', 0, -1, DL, E, DU, DLF, EF, DUF, DU2, IP, B,
$ 1, X, 1, R1, R2, W, RW, INFO )
CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
INFOT = 13
CALL ZGTRFS( 'N', 2, 1, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 1,
$ X, 2, R1, R2, W, RW, INFO )
CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
INFOT = 15
CALL ZGTRFS( 'N', 2, 1, DL, E, DU, DLF, EF, DUF, DU2, IP, B, 2,
$ X, 1, R1, R2, W, RW, INFO )
CALL CHKXER( 'ZGTRFS', INFOT, NOUT, LERR, OK )
*
* ZGTCON
*
SRNAMT = 'ZGTCON'
INFOT = 1
CALL ZGTCON( '/', 0, DL, E, DU, DU2, IP, ANORM, RCOND, W,
$ INFO )
CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL ZGTCON( 'I', -1, DL, E, DU, DU2, IP, ANORM, RCOND, W,
$ INFO )
CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL ZGTCON( 'I', 0, DL, E, DU, DU2, IP, -ANORM, RCOND, W,
$ INFO )
CALL CHKXER( 'ZGTCON', INFOT, NOUT, LERR, OK )
*
ELSE IF( LSAMEN( 2, C2, 'PT' ) ) THEN
*
* Test error exits for the positive definite tridiagonal
* routines.
*
* ZPTTRF
*
SRNAMT = 'ZPTTRF'
INFOT = 1
CALL ZPTTRF( -1, D, E, INFO )
CALL CHKXER( 'ZPTTRF', INFOT, NOUT, LERR, OK )
*
* ZPTTRS
*
SRNAMT = 'ZPTTRS'
INFOT = 1
CALL ZPTTRS( '/', 1, 0, D, E, X, 1, INFO )
CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL ZPTTRS( 'U', -1, 0, D, E, X, 1, INFO )
CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL ZPTTRS( 'U', 0, -1, D, E, X, 1, INFO )
CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL ZPTTRS( 'U', 2, 1, D, E, X, 1, INFO )
CALL CHKXER( 'ZPTTRS', INFOT, NOUT, LERR, OK )
*
* ZPTRFS
*
SRNAMT = 'ZPTRFS'
INFOT = 1
CALL ZPTRFS( '/', 1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
$ RW, INFO )
CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL ZPTRFS( 'U', -1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
$ RW, INFO )
CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL ZPTRFS( 'U', 0, -1, D, E, DF, EF, B, 1, X, 1, R1, R2, W,
$ RW, INFO )
CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
INFOT = 9
CALL ZPTRFS( 'U', 2, 1, D, E, DF, EF, B, 1, X, 2, R1, R2, W,
$ RW, INFO )
CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL ZPTRFS( 'U', 2, 1, D, E, DF, EF, B, 2, X, 1, R1, R2, W,
$ RW, INFO )
CALL CHKXER( 'ZPTRFS', INFOT, NOUT, LERR, OK )
*
* ZPTCON
*
SRNAMT = 'ZPTCON'
INFOT = 1
CALL ZPTCON( -1, D, E, ANORM, RCOND, RW, INFO )
CALL CHKXER( 'ZPTCON', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL ZPTCON( 0, D, E, -ANORM, RCOND, RW, INFO )
CALL CHKXER( 'ZPTCON', INFOT, NOUT, LERR, OK )
END IF
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of ZERRGT
*
END
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