44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
import decimal
|
|
import fractions
|
|
import math
|
|
def from_wei(decimals: int, value: int) -> float:
|
|
"""This function converts values in Wei to a token in the cic network.
|
|
:param decimals: The decimals required for wei values.
|
|
:type decimals: int
|
|
:param value: Value in Wei
|
|
:type value: int
|
|
:return: SRF equivalent of value in Wei
|
|
:rtype: float
|
|
"""
|
|
value = float(value) / (10**decimals)
|
|
return truncate(value=value, decimals=2)
|
|
|
|
|
|
def to_wei(decimals: int, value: int) -> int:
|
|
"""This functions converts values from a token in the cic network to Wei.
|
|
:param decimals: The decimals required for wei values.
|
|
:type decimals: int
|
|
:param value: Value in SRF
|
|
:type value: int
|
|
:return: Wei equivalent of value in SRF
|
|
:rtype: int
|
|
"""
|
|
return int(value * (10**decimals))
|
|
|
|
def truncate(value: float, decimals: int) -> float:
|
|
"""This function truncates a value to a specified number of decimals places.
|
|
:param value: The value to be truncated.
|
|
:type value: float
|
|
:param decimals: The number of decimals for the value to be truncated to
|
|
:type decimals: int
|
|
:return: The truncated value.
|
|
:rtype: int
|
|
"""
|
|
with decimal.localcontext() as ctx:
|
|
d = decimal.Decimal(str(value))
|
|
# if d.as_tuple().exponent <= -15:
|
|
# raise ValueError('Value too small to truncate')
|
|
ctx.rounding = decimal.ROUND_DOWN
|
|
return float(round(d, decimals))
|
|
|