code: def remainder(x, y, context=None):
      
      return _apply_function_in_current_context(
          BigFloat,
          mpfr.mpfr_remainder,
          (
              BigFloat._implicit_convert(x),
              BigFloat._implicit_convert(y),
          ),
          context,
      )
docs: Return x reduced modulo y.
  
      Returns the value of x - n * y, where n is the integer quotient of x
      divided by y, rounded to the nearest integer (ties rounded to even).
  
      Special values are handled as described in Section F.9.7.1 of the ISO C99
      standard: If x is infinite or y is zero, the result is NaN. If y is
      infinite and x is finite, the result is x (rounded to the current
      context). If the result is zero, it has the sign of x.