Method _isnan

Lib/_pydecimal.py:668–681

Returns whether the number is not actually one. 0 if a number 1 if NaN 2 if sNaN

(self)

            return cls(result)

    def _isnan(self):
        """Returns whether the number is not actually one.

        0 if a number
        1 if NaN
        2 if sNaN
        """
        if self._is_special:
            exp = self._exp
            if exp == 'n':
                return 1
            elif exp == 'N':
                return 2
        return 0

    def _isinfinity(self):
        """Returns whether the number is infinite