xerbla.f

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00001       SUBROUTINE XERBLA( SRNAME, INFO )
00002 *
00003 *  -- LAPACK auxiliary routine (preliminary version) --
00004 *     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
00005 *     Courant Institute, Argonne National Lab, and Rice University
00006 *     February 29, 1992
00007 *
00008 *     .. Scalar Arguments ..
00009       CHARACTER*6        SRNAME
00010       INTEGER            INFO
00011 *     ..
00012 *
00013 *  Purpose
00014 *  =======
00015 *
00016 *  XERBLA  is an error handler for the LAPACK routines.
00017 *  It is called by an LAPACK routine if an input parameter has an
00018 *  invalid value.  A message is printed and execution stops.
00019 *
00020 *  Installers may consider modifying the STOP statement in order to
00021 *  call system-specific exception-handling facilities.
00022 *
00023 *  Arguments
00024 *  =========
00025 *
00026 *  SRNAME  (input) CHARACTER*6
00027 *          The name of the routine which called XERBLA.
00028 *
00029 *  INFO    (input) INTEGER
00030 *          The position of the invalid parameter in the parameter list
00031 *          of the calling routine.
00032 *
00033 *
00034       WRITE( *, FMT = 9999 )SRNAME, INFO
00035 *
00036       CALL XSTOPX (' ')
00037 *
00038  9999 FORMAT( ' ** On entry to ', A6, ' parameter number ', I2, ' had ',
00039      $      'an illegal value' )
00040 *
00041 *     End of XERBLA
00042 *
00043       END
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