Round a nonzero, nonspecial Decimal to a fixed number of significant figures, using the given rounding mode. Infinities, NaNs and zeros are returned unaltered. This operation is quiet: it raises no flags, and uses no information from the context.
(self, places, rounding)
| 2606 | return _dec_from_triple(self._sign, coeff, exp) |
| 2607 | |
| 2608 | def _round(self, places, rounding): |
| 2609 | """Round a nonzero, nonspecial Decimal to a fixed number of |
| 2610 | significant figures, using the given rounding mode. |
| 2611 | |
| 2612 | Infinities, NaNs and zeros are returned unaltered. |
| 2613 | |
| 2614 | This operation is quiet: it raises no flags, and uses no |
| 2615 | information from the context. |
| 2616 | |
| 2617 | """ |
| 2618 | if places <= 0: |
| 2619 | raise ValueError("argument should be at least 1 in _round") |
| 2620 | if self._is_special or not self: |
| 2621 | return Decimal(self) |
| 2622 | ans = self._rescale(self.adjusted()+1-places, rounding) |
| 2623 | # it can happen that the rescale alters the adjusted exponent; |
| 2624 | # for example when rounding 99.97 to 3 significant figures. |
| 2625 | # When this happens we end up with an extra 0 at the end of |
| 2626 | # the number; a second rescale fixes this. |
| 2627 | if ans.adjusted() != self.adjusted(): |
| 2628 | ans = ans._rescale(ans.adjusted()+1-places, rounding) |
| 2629 | return ans |
| 2630 | |
| 2631 | def to_integral_exact(self, rounding=None, context=None): |
| 2632 | """Rounds to a nearby integer. |
no test coverage detected