Cast offset to Decimal if value is Decimal in ; Fix hgrecco#1950

CHANGES

@@ -7,6 +7,8 @@ Pint Changelog
 - Add `dim_sort` function to _formatter_helpers.
 - Add `dim_order` and `default_sort_func` properties to FullFormatter.
  (PR #1926, fixes Issue #1841)
+- Cast offset to Decimal if value is Decimal in `pint.facets.nonmultiplicative.definitions.OffsetConverter`.
+ (Fixes #1950)
 
 
 0.23 (2023-12-08)

pint/facets/nonmultiplicative/definitions.py

@@ -9,6 +9,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
+from decimal import Decimal
 
 from ..._typing import Magnitude
 from ...compat import HAS_NUMPY, exp, log
@@ -26,20 +27,22 @@ def is_multiplicative(self):
  return self.offset == 0
 
  def to_reference(self, value: Magnitude, inplace: bool = False) -> Magnitude:
+ offset = Decimal(self.offset) if isinstance(value, Decimal) else self.offset
  if inplace:
  value *= self.scale
- value += self.offset
+ value += offset
  else:
- value = value * self.scale + self.offset
+ value = value * self.scale + offset
 
  return value
 
  def from_reference(self, value: Magnitude, inplace: bool = False) -> Magnitude:
+ offset = Decimal(self.offset) if isinstance(value, Decimal) else self.offset
  if inplace:
- value -= self.offset
+ value -= offset
  value /= self.scale
  else:
- value = (value - self.offset) / self.scale
+ value = (value - offset) / self.scale
 
  return value