zdrvrf2.f

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*> \brief \b ZDRVRF2
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at 
*            http://www.netlib.org/lapack/explore-html/ 
*
*  Definition:
*  ===========
*
*       SUBROUTINE ZDRVRF2( NOUT, NN, NVAL, A, LDA, ARF, AP, ASAV  )
* 
*       .. Scalar Arguments ..
*       INTEGER            LDA, NN, NOUT
*       ..
*       .. Array Arguments ..
*       INTEGER            NVAL( NN )
*       COMPLEX*16         A( LDA, * ), ARF( * ), AP(*), ASAV( LDA, * )
*       ..
*  
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> ZDRVRF2 tests the LAPACK RFP convertion routines.
*> \endverbatim
*
*  Arguments:
*  ==========
*
*> \param[in] NOUT
*> \verbatim
*>          NOUT is INTEGER
*>                The unit number for output.
*> \endverbatim
*>
*> \param[in] NN
*> \verbatim
*>          NN is INTEGER
*>                The number of values of N contained in the vector NVAL.
*> \endverbatim
*>
*> \param[in] NVAL
*> \verbatim
*>          NVAL is INTEGER array, dimension (NN)
*>                The values of the matrix dimension N.
*> \endverbatim
*>
*> \param[out] A
*> \verbatim
*>          A is COMPLEX*16 array, dimension (LDA,NMAX)
*> \endverbatim
*>
*> \param[in] LDA
*> \verbatim
*>          LDA is INTEGER
*>                The leading dimension of the array A.  LDA >= max(1,NMAX).
*> \endverbatim
*>
*> \param[out] ARF
*> \verbatim
*>          ARF is COMPLEX*16 array, dimension ((NMAX*(NMAX+1))/2).
*> \endverbatim
*>
*> \param[out] AP
*> \verbatim
*>          AP is COMPLEX*16 array, dimension ((NMAX*(NMAX+1))/2).
*> \endverbatim
*>
*> \param[out] ASAV
*> \verbatim
*>          ASAV is COMPLEX*16 array, dimension (LDA,NMAX)
*> \endverbatim
*
*  Authors:
*  ========
*
*> \author Univ. of Tennessee 
*> \author Univ. of California Berkeley 
*> \author Univ. of Colorado Denver 
*> \author NAG Ltd. 
*
*> \date November 2011
*
*> \ingroup complex16_lin
*
*  =====================================================================
      SUBROUTINE zdrvrf2( NOUT, NN, NVAL, A, LDA, ARF, AP, ASAV  )
*
*  -- LAPACK test routine (version 3.4.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      INTEGER            lda, nn, nout
*     ..
*     .. Array Arguments ..
      INTEGER            nval( nn )
      COMPLEX*16         a( lda, * ), arf( * ), ap(*), asav( lda, * )
*     ..
*
*  =====================================================================
*     ..
*     .. Local Scalars ..
      LOGICAL            lower, ok1, ok2
      CHARACTER          uplo, cform
      INTEGER            i, iform, iin, info, iuplo, j, n,
     +                   nerrs, nrun
*     ..
*     .. Local Arrays ..
      CHARACTER          uplos( 2 ), forms( 2 )
      INTEGER            iseed( 4 ), iseedy( 4 )
*     ..
*     .. External Functions ..
      COMPLEX*16         zlarnd
      EXTERNAL           zlarnd
*     ..
*     .. External Subroutines ..
      EXTERNAL           ztfttr, ztfttp, ztrttf, ztrttp, ztpttr, ztpttf
*     ..
*     .. Scalars in Common ..
      CHARACTER*32       srnamt
*     ..
*     .. Common blocks ..
      common             / srnamc / srnamt
*     ..
*     .. Data statements ..
      DATA               iseedy / 1988, 1989, 1990, 1991 /
      DATA               uplos / 'U', 'L' /
      DATA               forms / 'N', 'C' /
*     ..
*     .. Executable Statements ..
*
*     Initialize constants and the random number seed.
*
      nrun = 0
      nerrs = 0
      info = 0
      DO 10 i = 1, 4
         iseed( i ) = iseedy( i )
   10 continue
*
      DO 120 iin = 1, nn
*
         n = nval( iin )
*
*        Do first for UPLO = 'U', then for UPLO = 'L'
*
         DO 110 iuplo = 1, 2
*
            uplo = uplos( iuplo )
            lower = .true.
            IF ( iuplo.EQ.1 ) lower = .false.
*
*           Do first for CFORM = 'N', then for CFORM = 'C'
*
            DO 100 iform = 1, 2
*
               cform = forms( iform )
*
               nrun = nrun + 1
*
               DO j = 1, n
                  DO i = 1, n
                     a( i, j) = zlarnd( 4, iseed )
                  END DO
               END DO
*
               srnamt = 'ZTRTTF'
               CALL ztrttf( cform, uplo, n, a, lda, arf, info )
*
               srnamt = 'ZTFTTP'
               CALL ztfttp( cform, uplo, n, arf, ap, info )
*
               srnamt = 'ZTPTTR'
               CALL ztpttr( uplo, n, ap, asav, lda, info )
*
               ok1 = .true.
               IF ( lower ) THEN
                  DO j = 1, n
                     DO i = j, n
                        IF ( a(i,j).NE.asav(i,j) ) THEN
                           ok1 = .false.
                        END IF
                     END DO
                  END DO
               ELSE
                  DO j = 1, n
                     DO i = 1, j
                        IF ( a(i,j).NE.asav(i,j) ) THEN
                           ok1 = .false.
                        END IF
                     END DO
                  END DO
               END IF
*
               nrun = nrun + 1
*
               srnamt = 'ZTRTTP'
               CALL ztrttp( uplo, n, a, lda, ap, info )
*
               srnamt = 'ZTPTTF'
               CALL ztpttf( cform, uplo, n, ap, arf, info )
*
               srnamt = 'ZTFTTR'
               CALL ztfttr( cform, uplo, n, arf, asav, lda, info )
*
               ok2 = .true.
               IF ( lower ) THEN
                  DO j = 1, n
                     DO i = j, n
                        IF ( a(i,j).NE.asav(i,j) ) THEN
                           ok2 = .false.
                        END IF
                     END DO
                  END DO
               ELSE
                  DO j = 1, n
                     DO i = 1, j
                        IF ( a(i,j).NE.asav(i,j) ) THEN
                           ok2 = .false.
                        END IF
                     END DO
                  END DO
               END IF
*
               IF (( .NOT.ok1 ).OR.( .NOT.ok2 )) THEN
                  IF( nerrs.EQ.0 ) THEN
                     WRITE( nout, * )
                     WRITE( nout, fmt = 9999 )
                  END IF
                  WRITE( nout, fmt = 9998 ) n, uplo, cform
                  nerrs = nerrs + 1
               END IF
*
  100       continue
  110    continue
  120 continue
*
*     Print a summary of the results.
*
      IF ( nerrs.EQ.0 ) THEN
         WRITE( nout, fmt = 9997 ) nrun
      ELSE
         WRITE( nout, fmt = 9996 ) nerrs, nrun
      END IF
*
 9999 format( 1x, ' *** Error(s) while testing the RFP convertion',
     +         ' routines ***')
 9998 format( 1x, '     Error in RFP,convertion routines N=',i5,
     +        ' UPLO=''', a1, ''', FORM =''',a1,'''')
 9997 format( 1x, 'All tests for the RFP convertion routines passed (', 
     +        i5,' tests run)')
 9996 format( 1x, 'RFP convertion routines:',i5,' out of ',i5,
     +        ' error message recorded') 
*
      return
*
*     End of ZDRVRF2
*
      END