[add] function to round float to closest multiple

models/scop_cotisation.py

@@ -120,3 +120,18 @@ class ScopCotisation(models.AbstractModel):
             ('end', '>', date(self.year, 1, 1))
         ]).mapped('partner_id')
         return members
+
+    def round_to_closest_multiple(self, float_to_round, multiple):
+        """
+        :param float_to_round:
+        :param multiple:
+        :return: closest_multiple
+        """
+        small_multiple = (float_to_round // multiple) * multiple
+        large_multiple = small_multiple + multiple
+
+        # Return the closest of two
+        if abs(float_to_round - small_multiple) < large_multiple:
+            return small_multiple
+        else:
+            return large_multiple