parameters: (self, prec)
docstring: Round down unless digit prec-1 is 0 or 5.
docstring_summary: Round down unless digit prec-1 is 0 or 5.
docstring_tokens: Round down unless digit prec - 1 is 0 or 5 .
function: def _round_05up(self, prec):
          """Round down unless digit prec-1 is 0 or 5."""
          if prec and self._int[prec-1] not in '05':
              return self._round_down(prec)
          else:
              return -self._round_down(prec)
function_tokens: def _round_05up ( self , prec ) : if prec and self . _int [ prec - 1 ] not in '05' : return self . _round_down ( prec ) else : return - self . _round_down ( prec )