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Private Function CalcRealizedLoss（period As Integer）#计算已发生的损失
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2.债券模块
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接收现金流管道里提供的现金流并按期偿还本金和利息或减值。
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Public Function PrincipalWritedown（period As Integer，totalWritedown As Double） As Double#债券减值
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Public Function PayInterest（period As Integer，rawRate As Double，capRate As Double，availFund As Double，bondCoupon As Double，couponCap As Double，status As String） As Double#偿付目标月份的利息
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Public Function PayPrincipal（period As Integer，payable As Double） As Double#偿付目标月份的债券本金
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3.现金流管道模块
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该模块对现金流的分配进行计算。现金流管道分为横向和纵向两种。横向管道负责分割现金流并付款给同样信贷级别的债券；纵向管道则对现金流进行自上而下的分配。
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Public Function PayPipe（period As Integer，availFund As Double，groupPercents As Variant） As Double#按横向或纵向以及比例向管道内注入现金流
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Public Function PayRemainLeg（ByVal period As Integer，availFund As Double） As Double#如果横向管道内某一债券已完全付清，剩下的应付现金将用以支付管道内剩余的另一债券
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Public Function PipeBalance（ByVal period As Integer） As Double#计算管道内所有债券的余额
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Public Function PriorityBalance（ByVal period As Integer，ByVal Priority As Integer） As Double#计算管道内某个目标等级的余额
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Private Function PayPriorityLevel（ByVal period As Integer，ByVal Priority As Integer，availFund As Double） As Double#为管道内同一指定级别的债券注入现金流
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Public Function WritedownPipe（period As Integer，totalWritedown As Double） As Double#为管道内债券进行减值
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4.衍生品模块
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利率通道（Corridors）和利率互换（SWAP）的计算。
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Private Sub CalDealPayLeg（useLessor As Boolean，BondBal As Double，period As Integer，DayAdj30 As Double）#计算付款（固定利率）的金额
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Private Sub CalDealRecLeg（useLessor As Boolean，BondBal As Double，period As Integer，dayAdjAct As Double）#计算收款 （浮动利率）的金额
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Public Sub CalDealCashflow（useLessor As Boolean，BondBal As Double，period As Integer，DayAdj30 As Double，dayAdjAct As Double）#计算净现金流
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四、现金流建模宏程序引用的计算函数
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（一）资产端模块
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1.资产管理人模块（Collateral Analyst）
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