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SUBROUTINE XERBLA(SRNAME,INFO)
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* -- LAPACK auxiliary routine (preliminary version) --
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* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
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* .. Scalar Arguments ..
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* XERBLA is an error handler for the LAPACK routines.
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* It is called by an LAPACK routine if an input parameter has an
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* invalid value. A message is printed and execution stops.
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* Installers may consider modifying the STOP statement in order to
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* call system-specific exception-handling facilities.
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* SRNAME (input) CHARACTER*6
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* The name of the routine which called XERBLA.
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* INFO (input) INTEGER
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* The position of the invalid parameter in the parameter list
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* of the calling routine.
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WRITE (*,FMT=9999) SRNAME,INFO
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9999 FORMAT (' ** On entry to ',A6,' parameter number ',I2,' had ',