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SUBROUTINE XERBLA( SRNAME, INFO )
*
* -- LAPACK auxiliary routine (version 3.0) --
* Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
* Courant Institute, Argonne National Lab, and Rice University
* February 29, 1992
*
* .. Scalar Arguments ..
CHARACTER*6 SRNAME
INTEGER INFO
* ..
*
* Purpose
* =======
*
* This is a special version of XERBLA to be used only as part of
* the test program for testing error exits from the LAPACK routines.
* Error messages are printed if INFO.NE.INFOT or if SRNAME.NE.SRMANT,
* where INFOT and SRNAMT are values stored in COMMON.
*
* Arguments
* =========
*
* SRNAME (input) CHARACTER*6
* The name of the subroutine calling XERBLA. This name should
* match the COMMON variable SRNAMT.
*
* INFO (input) INTEGER
* The error return code from the calling subroutine. INFO
* should equal the COMMON variable INFOT.
*
* Further Details
* ======= =======
*
* The following variables are passed via the common blocks INFOC and
* SRNAMC:
*
* INFOT INTEGER Expected integer return code
* NOUT INTEGER Unit number for printing error messages
* OK LOGICAL Set to .TRUE. if INFO = INFOT and
* SRNAME = SRNAMT, otherwise set to .FALSE.
* LERR LOGICAL Set to .TRUE., indicating that XERBLA was called
* SRNAMT CHARACTER*6 Expected name of calling subroutine
*
*
* .. 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 ..
*
LERR = .TRUE.
IF( INFO.NE.INFOT ) THEN
IF( INFOT.NE.0 ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT, INFO, INFOT
ELSE
WRITE( NOUT, FMT = 9997 )SRNAME, INFO
END IF
OK = .FALSE.
END IF
IF( SRNAME.NE.SRNAMT ) THEN
WRITE( NOUT, FMT = 9998 )SRNAME, SRNAMT
OK = .FALSE.
END IF
RETURN
*
9999 FORMAT( ' *** XERBLA was called from ', A6, ' with INFO = ', I6,
$ ' instead of ', I2, ' ***' )
9998 FORMAT( ' *** XERBLA was called with SRNAME = ', A6,
$ ' instead of ', A6, ' ***' )
9997 FORMAT( ' *** On entry to ', A6, ' parameter number ', I6,
$ ' had an illegal value ***' )
*
* End of XERBLA
*
END
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