Add ether_rounding to evm_utils

Author: philogicae

src/aleph/sdk/evm_utils.py

@@ -1,4 +1,4 @@
-from decimal import Decimal
+from decimal import ROUND_CEILING, Decimal
 from enum import Enum
 from typing import List, Optional, Union
 
@@ -37,6 +37,11 @@ def to_wei_token(amount: Decimal) -> Decimal:
     return amount * Decimal(10) ** Decimal(settings.TOKEN_DECIMALS)
 
 
+def ether_rounding(amount: Decimal) -> Decimal:
+    """Rounds the given value to 18 decimals."""
+    return amount.quantize(Decimal(1) / 10**18, rounding=ROUND_CEILING)
+
+
 def get_chain_id(chain: Union[Chain, str, None]) -> Optional[int]:
     """Returns the CHAIN_ID of a given EVM blockchain"""
     if chain: