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### 10.8 Miscellaneous `poly_int` routines

``print_dec (value, file, sign)`'
``print_dec (value, file)`'
  Print value to file as a decimal value, interpreting the coefficients according to sign. The final argument is optional if value has an inherent sign; for example, `poly_int64` values print as signed by default and `poly_uint64` values print as unsigned by default.

  This is a simply a `poly_int` version of a wide-int routine.