ve3-shared 0.9.1

ve(3,3) msgs in cosmwasm
Documentation 
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use std::{convert::TryInto, str::FromStr};

use cosmwasm_std::{Decimal, Decimal256, Fraction, OverflowError, StdError, Uint128, Uint256};

pub trait DecimalExt {
    fn checked_add(self, other: Decimal) -> Result<Decimal, StdError>;
    fn checked_mul_uint(self, other: Uint128) -> Result<Uint128, StdError>;
    fn to_decimal256(self) -> Decimal256;
}

impl DecimalExt for Decimal {
    fn checked_add(self, other: Decimal) -> Result<Decimal, StdError> {
        self.numerator()
            .checked_add(other.numerator())
            .map(|_| self + other)
            .map_err(StdError::overflow)
    }

    fn checked_mul_uint(self, other: Uint128) -> Result<Uint128, StdError> {
        if self.is_zero() || other.is_zero() {
            return Ok(Uint128::zero());
        }
        let multiply_ratio = other.full_mul(self.numerator()) / Uint256::from(self.denominator());
        if multiply_ratio > Uint256::from(Uint128::MAX) {
            Err(StdError::overflow(OverflowError::new(
                cosmwasm_std::OverflowOperation::Mul,
                self,
                other,
            )))
        } else {
            Ok(multiply_ratio.try_into().unwrap())
        }
    }

    fn to_decimal256(self) -> Decimal256 {
        Decimal256::from_str(&self.to_string()).unwrap()
    }
}