130 lines
3.5 KiB
Fortran
130 lines
3.5 KiB
Fortran
*> \brief \b XERBLA
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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 XERBLA( SRNAME, INFO )
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*
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* .. Scalar Arguments ..
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* CHARACTER*(*) SRNAME
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* INTEGER INFO
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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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*> This is a special version of XERBLA to be used only as part of
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*> the test program for testing error exits from the LAPACK routines.
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*> Error messages are printed if INFO.NE.INFOT or if SRNAME.NE.SRNAMT,
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*> where INFOT and SRNAMT are values stored in COMMON.
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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] SRNAME
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*> \verbatim
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*> SRNAME is CHARACTER*(*)
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*> The name of the subroutine calling XERBLA. This name should
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*> match the COMMON variable SRNAMT.
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*> \endverbatim
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*>
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*> \param[in] INFO
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*> \verbatim
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*> INFO is INTEGER
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*> The error return code from the calling subroutine. INFO
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*> should equal the COMMON variable INFOT.
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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 aux_eig
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*
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*> \par Further Details:
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* =====================
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*>
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*> \verbatim
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*>
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*> The following variables are passed via the common blocks INFOC and
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*> SRNAMC:
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*>
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*> INFOT INTEGER Expected integer return code
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*> NOUT INTEGER Unit number for printing error messages
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*> OK LOGICAL Set to .TRUE. if INFO = INFOT and
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*> SRNAME = SRNAMT, otherwise set to .FALSE.
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*> LERR LOGICAL Set to .TRUE., indicating that XERBLA was called
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*> SRNAMT CHARACTER*(*) Expected name of calling subroutine
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*> \endverbatim
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*>
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* =====================================================================
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SUBROUTINE XERBLA( SRNAME, INFO )
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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*(*) SRNAME
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INTEGER INFO
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* ..
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*
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* =====================================================================
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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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* .. Intrinsic Functions ..
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INTRINSIC LEN_TRIM
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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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LERR = .TRUE.
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IF( INFO.NE.INFOT ) THEN
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IF( INFOT.NE.0 ) THEN
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WRITE( NOUT, FMT = 9999 )
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$ SRNAMT( 1:LEN_TRIM( SRNAMT ) ), INFO, INFOT
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ELSE
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WRITE( NOUT, FMT = 9997 )
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$ SRNAME( 1:LEN_TRIM( SRNAME ) ), INFO
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END IF
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OK = .FALSE.
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END IF
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IF( SRNAME.NE.SRNAMT ) THEN
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WRITE( NOUT, FMT = 9998 )
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$ SRNAME( 1:LEN_TRIM( SRNAME ) ),
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$ SRNAMT( 1:LEN_TRIM( SRNAMT ) )
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OK = .FALSE.
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END IF
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RETURN
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*
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9999 FORMAT( ' *** XERBLA was called from ', A, ' with INFO = ', I6,
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$ ' instead of ', I2, ' ***' )
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9998 FORMAT( ' *** XERBLA was called with SRNAME = ', A,
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$ ' instead of ', A9, ' ***' )
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9997 FORMAT( ' *** On entry to ', A, ' parameter number ', I6,
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$ ' had an illegal value ***' )
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*
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* End of XERBLA
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*
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END
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