zerrgg.f

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      SUBROUTINE ZERRGG( PATH, NUNIT )
*
*  -- LAPACK test routine (version 3.1) --
*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
*     November 2006
*
*     .. Scalar Arguments ..
      CHARACTER*3        PATH
      INTEGER            NUNIT
*     ..
*
*  Purpose
*  =======
*
*  ZERRGG tests the error exits for ZGGES, ZGGESX, ZGGEV, ZGGEVX,
*  ZGGGLM, ZGGHRD, ZGGLSE, ZGGQRF, ZGGRQF, ZGGSVD, ZGGSVP, ZHGEQZ,
*  ZTGEVC, ZTGEXC, ZTGSEN, ZTGSJA, ZTGSNA, and ZTGSYL.
*
*  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, LW
      PARAMETER          ( NMAX = 3, LW = 6*NMAX )
      DOUBLE PRECISION   ONE, ZERO
      PARAMETER          ( ONE = 1.0D+0, ZERO = 0.0D+0 )
*     ..
*     .. Local Scalars ..
      CHARACTER*2        C2
      INTEGER            DUMMYK, DUMMYL, I, IFST, ILST, INFO, J, M,
     $                   NCYCLE, NT, SDIM
      DOUBLE PRECISION   ANRM, BNRM, DIF, SCALE, TOLA, TOLB
*     ..
*     .. Local Arrays ..
      LOGICAL            BW( NMAX ), SEL( NMAX )
      INTEGER            IW( LW )
      DOUBLE PRECISION   LS( NMAX ), R1( NMAX ), R2( NMAX ),
     $                   RCE( NMAX ), RCV( NMAX ), RS( NMAX ), RW( LW )
      COMPLEX*16         A( NMAX, NMAX ), ALPHA( NMAX ),
     $                   B( NMAX, NMAX ), BETA( NMAX ), Q( NMAX, NMAX ),
     $                   TAU( NMAX ), U( NMAX, NMAX ), V( NMAX, NMAX ),
     $                   W( LW ), Z( NMAX, NMAX )
*     ..
*     .. External Functions ..
      LOGICAL            LSAMEN, ZLCTES, ZLCTSX
      EXTERNAL           LSAMEN, ZLCTES, ZLCTSX
*     ..
*     .. External Subroutines ..
      EXTERNAL           CHKXER, ZGGES, ZGGESX, ZGGEV, ZGGEVX, ZGGGLM,
     $                   ZGGHRD, ZGGLSE, ZGGQRF, ZGGRQF, ZGGSVD, ZGGSVP,
     $                   ZHGEQZ, ZTGEVC, ZTGEXC, ZTGSEN, ZTGSJA, ZTGSNA,
     $                   ZTGSYL
*     ..
*     .. 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 )
*
*     Set the variables to innocuous values.
*
      DO 20 J = 1, NMAX
         SEL( J ) = .TRUE.
         DO 10 I = 1, NMAX
            A( I, J ) = ZERO
            B( I, J ) = ZERO
   10    CONTINUE
   20 CONTINUE
      DO 30 I = 1, NMAX
         A( I, I ) = ONE
         B( I, I ) = ONE
   30 CONTINUE
      OK = .TRUE.
      TOLA = 1.0D0
      TOLB = 1.0D0
      IFST = 1
      ILST = 1
      NT = 0
*
*     Test error exits for the GG path.
*
      IF( LSAMEN( 2, C2, 'GG' ) ) THEN
*
*        ZGGHRD
*
         SRNAMT = 'ZGGHRD'
         INFOT = 1
         CALL ZGGHRD( '/', 'N', 0, 1, 0, A, 1, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 2
         CALL ZGGHRD( 'N', '/', 0, 1, 0, A, 1, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 3
         CALL ZGGHRD( 'N', 'N', -1, 0, 0, A, 1, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 4
         CALL ZGGHRD( 'N', 'N', 0, 0, 0, A, 1, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 5
         CALL ZGGHRD( 'N', 'N', 0, 1, 1, A, 1, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 7
         CALL ZGGHRD( 'N', 'N', 2, 1, 1, A, 1, B, 2, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 9
         CALL ZGGHRD( 'N', 'N', 2, 1, 1, A, 2, B, 1, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 11
         CALL ZGGHRD( 'V', 'N', 2, 1, 1, A, 2, B, 2, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         INFOT = 13
         CALL ZGGHRD( 'N', 'V', 2, 1, 1, A, 2, B, 2, Q, 1, Z, 1, INFO )
         CALL CHKXER( 'ZGGHRD', INFOT, NOUT, LERR, OK )
         NT = NT + 9
*
*        ZHGEQZ
*
         SRNAMT = 'ZHGEQZ'
         INFOT = 1
         CALL ZHGEQZ( '/', 'N', 'N', 0, 1, 0, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 2
         CALL ZHGEQZ( 'E', '/', 'N', 0, 1, 0, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 3
         CALL ZHGEQZ( 'E', 'N', '/', 0, 1, 0, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 4
         CALL ZHGEQZ( 'E', 'N', 'N', -1, 0, 0, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 5
         CALL ZHGEQZ( 'E', 'N', 'N', 0, 0, 0, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 6
         CALL ZHGEQZ( 'E', 'N', 'N', 0, 1, 1, A, 1, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 8
         CALL ZHGEQZ( 'E', 'N', 'N', 2, 1, 1, A, 1, B, 2, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 10
         CALL ZHGEQZ( 'E', 'N', 'N', 2, 1, 1, A, 2, B, 1, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 14
         CALL ZHGEQZ( 'E', 'V', 'N', 2, 1, 1, A, 2, B, 2, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         INFOT = 16
         CALL ZHGEQZ( 'E', 'N', 'V', 2, 1, 1, A, 2, B, 2, ALPHA, BETA,
     $                Q, 1, Z, 1, W, 1, RW, INFO )
         CALL CHKXER( 'ZHGEQZ', INFOT, NOUT, LERR, OK )
         NT = NT + 10
*
*        ZTGEVC
*
         SRNAMT = 'ZTGEVC'
         INFOT = 1
         CALL ZTGEVC( '/', 'A', SEL, 0, A, 1, B, 1, Q, 1, Z, 1, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 2
         CALL ZTGEVC( 'R', '/', SEL, 0, A, 1, B, 1, Q, 1, Z, 1, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 4
         CALL ZTGEVC( 'R', 'A', SEL, -1, A, 1, B, 1, Q, 1, Z, 1, 0, M,
     $                W, RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 6
         CALL ZTGEVC( 'R', 'A', SEL, 2, A, 1, B, 2, Q, 1, Z, 2, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 8
         CALL ZTGEVC( 'R', 'A', SEL, 2, A, 2, B, 1, Q, 1, Z, 2, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 10
         CALL ZTGEVC( 'L', 'A', SEL, 2, A, 2, B, 2, Q, 1, Z, 1, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 12
         CALL ZTGEVC( 'R', 'A', SEL, 2, A, 2, B, 2, Q, 1, Z, 1, 0, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         INFOT = 13
         CALL ZTGEVC( 'R', 'A', SEL, 2, A, 2, B, 2, Q, 1, Z, 2, 1, M, W,
     $                RW, INFO )
         CALL CHKXER( 'ZTGEVC', INFOT, NOUT, LERR, OK )
         NT = NT + 8
*
*     Test error exits for the GSV path.
*
      ELSE IF( LSAMEN( 3, PATH, 'GSV' ) ) THEN
*
*        ZGGSVD
*
         SRNAMT = 'ZGGSVD'
         INFOT = 1
         CALL ZGGSVD( '/', 'N', 'N', 0, 0, 0, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 2
         CALL ZGGSVD( 'N', '/', 'N', 0, 0, 0, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 3
         CALL ZGGSVD( 'N', 'N', '/', 0, 0, 0, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 4
         CALL ZGGSVD( 'N', 'N', 'N', -1, 0, 0, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 5
         CALL ZGGSVD( 'N', 'N', 'N', 0, -1, 0, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 6
         CALL ZGGSVD( 'N', 'N', 'N', 0, 0, -1, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 10
         CALL ZGGSVD( 'N', 'N', 'N', 2, 1, 1, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 12
         CALL ZGGSVD( 'N', 'N', 'N', 1, 1, 2, DUMMYK, DUMMYL, A, 1, B,
     $                1, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 16
         CALL ZGGSVD( 'U', 'N', 'N', 2, 2, 2, DUMMYK, DUMMYL, A, 2, B,
     $                2, R1, R2, U, 1, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 18
         CALL ZGGSVD( 'N', 'V', 'N', 2, 2, 2, DUMMYK, DUMMYL, A, 2, B,
     $                2, R1, R2, U, 2, V, 1, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         INFOT = 20
         CALL ZGGSVD( 'N', 'N', 'Q', 2, 2, 2, DUMMYK, DUMMYL, A, 2, B,
     $                2, R1, R2, U, 2, V, 2, Q, 1, W, RW, IW, INFO )
         CALL CHKXER( 'ZGGSVD', INFOT, NOUT, LERR, OK )
         NT = NT + 11
*
*        ZGGSVP
*
         SRNAMT = 'ZGGSVP'
         INFOT = 1
         CALL ZGGSVP( '/', 'N', 'N', 0, 0, 0, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 2
         CALL ZGGSVP( 'N', '/', 'N', 0, 0, 0, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 3
         CALL ZGGSVP( 'N', 'N', '/', 0, 0, 0, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 4
         CALL ZGGSVP( 'N', 'N', 'N', -1, 0, 0, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 5
         CALL ZGGSVP( 'N', 'N', 'N', 0, -1, 0, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 6
         CALL ZGGSVP( 'N', 'N', 'N', 0, 0, -1, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 8
         CALL ZGGSVP( 'N', 'N', 'N', 2, 1, 1, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 10
         CALL ZGGSVP( 'N', 'N', 'N', 1, 2, 1, A, 1, B, 1, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 16
         CALL ZGGSVP( 'U', 'N', 'N', 2, 2, 2, A, 2, B, 2, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 1, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )
         CALL CHKXER( 'ZGGSVP', INFOT, NOUT, LERR, OK )
         INFOT = 18
         CALL ZGGSVP( 'N', 'V', 'N', 2, 2, 2, A, 2, B, 2, TOLA, TOLB,
     $                DUMMYK, DUMMYL, U, 2, V, 1, Q, 1, IW, RW, TAU, W,
     $                INFO )