--- /dev/null
+*> \brief \b XERBLA
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+* Definition:
+* ===========
+*
+* SUBROUTINE XERBLA( SRNAME, INFO )
+*
+* .. Scalar Arguments ..
+* CHARACTER*(*) SRNAME
+* INTEGER INFO
+* ..
+*
+*
+*> \par Purpose:
+* =============
+*>
+*> \verbatim
+*>
+*> XERBLA is an error handler for the LAPACK routines.
+*> It is called by an LAPACK routine if an input parameter has an
+*> invalid value. A message is printed and execution stops.
+*>
+*> Installers may consider modifying the STOP statement in order to
+*> call system-specific exception-handling facilities.
+*> \endverbatim
+*
+* Arguments:
+* ==========
+*
+*> \param[in] SRNAME
+*> \verbatim
+*> SRNAME is CHARACTER*(*)
+*> The name of the routine which called XERBLA.
+*> \endverbatim
+*>
+*> \param[in] INFO
+*> \verbatim
+*> INFO is INTEGER
+*> The position of the invalid parameter in the parameter list
+*> of the calling routine.
+*> \endverbatim
+*
+* Authors:
+* ========
+*
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
+*
+*> \date November 2011
+*
+*> \ingroup aux_blas
+*
+* =====================================================================
+ SUBROUTINE XERBLA( SRNAME, INFO )
+*
+* -- Reference BLAS level1 routine (version 3.4.0) --
+* -- Reference BLAS is a software package provided by Univ. of Tennessee, --
+* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+* November 2011
+*
+* .. Scalar Arguments ..
+ CHARACTER*(*) SRNAME
+ INTEGER INFO
+* ..
+*
+* =====================================================================
+*
+* .. Intrinsic Functions ..
+ INTRINSIC LEN_TRIM
+* ..
+* .. Executable Statements ..
+*
+ WRITE( *, FMT = 9999 )SRNAME( 1:LEN_TRIM( SRNAME ) ), INFO
+*
+ STOP
+*
+ 9999 FORMAT( ' ** On entry to ', A, ' parameter number ', I2, ' had ',
+ $ 'an illegal value' )
+*
+* End of XERBLA
+*
+ END