amountsAvailable.sol

function _amountAvailable(address from) internal view returns (uint256) {
    vesting memory vested = _vesting[from];
    uint256 totalBalance = _totalBalanceOf(from);
    if (vested.amount > 0) {
        // vesting applies
        uint256 vestingIndex =
            _vestingDays.findUpperBound(today() - vested.startDate);
        if (vestingIndex < _vestingDays.length) {
            // still in vesting phase
            uint256 vestingBasisPoints = _vestingBasisPoints[vestingIndex];
            uint256 maxAmountAvailable =
                vested.amount.mul(vestingBasisPoints).div(
                    BASIS_POINT_DIVISOR
                );
            uint256 remainingVestedAmount =
                vested.amount.sub(maxAmountAvailable);
            return totalBalance.sub(remainingVestedAmount);
        } else {
            return totalBalance;
        }
    } else {
        return totalBalance;
    }
}