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.SRNAMT,
 where INFOT and SRNAMT are values stored in COMMON.

SRNAME

          SRNAME is CHARACTER*(*)
          The name of the subroutine calling XERBLA.  This name should
          match the COMMON variable SRNAMT.

INFO

          INFO is INTEGER
          The error return code from the calling subroutine.  INFO
          should equal the COMMON variable INFOT.

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  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*(*) Expected name of calling subroutine