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## psb_precdescr -- Prints a description of current preconditioner

    call psb_precdescr(prec)
    call psb_precdescr(prec, iout)

Type:
  Asynchronous.
On Entry
prec
  the preconditioner. Scope: local
  Type: required
  Intent: in.
  Specified as: a preconditioner data structure precdata`psb_prec_type`.
iout
  output unit. Scope: local
  Type: optiona
  Intent: in.
  Specified as: an integer number.