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ref #65: new formula functions COUPNCD and COUPNUM

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xuri 2021-11-08 00:19:28 +08:00
parent 1df76b583c
commit 8f82d8b029
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2 changed files with 67 additions and 0 deletions
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42
calc.go
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@ -350,6 +350,8 @@ type formulaFuncs struct {
// COUNT
// COUNTA
// COUNTBLANK
// COUPNCD
// COUPNUM
// COUPPCD
// CSC
// CSCH
@ -9543,6 +9545,46 @@ func (fn *formulaFuncs) prepareCouponArgs(name string, argsList *list.List) form
return newListFormulaArg([]formulaArg{settlement, maturity, frequency, basis})
}
// COUPNCD function calculates the number of coupons payable, between a
// security's settlement date and maturity date, rounded up to the nearest
// whole coupon. The syntax of the function is:
//
// COUPNCD(settlement,maturity,frequency,[basis])
//
func (fn *formulaFuncs) COUPNCD(argsList *list.List) formulaArg {
args := fn.prepareCouponArgs("COUPNCD", argsList)
if args.Type != ArgList {
return args
}
settlement := timeFromExcelTime(args.List[0].Number, false)
maturity := timeFromExcelTime(args.List[1].Number, false)
ncd := time.Date(settlement.Year(), maturity.Month(), maturity.Day(), 0, 0, 0, 0, time.UTC)
if ncd.After(settlement) {
ncd = ncd.AddDate(-1, 0, 0)
}
for !ncd.After(settlement) {
ncd = ncd.AddDate(0, 12/int(args.List[2].Number), 0)
}
return newNumberFormulaArg(daysBetween(excelMinTime1900.Unix(), makeDate(ncd.Year(), ncd.Month(), ncd.Day())) + 1)
}
// COUPNUM function calculates the number of coupons payable, between a
// security's settlement date and maturity date, rounded up to the nearest
// whole coupon. The syntax of the function is:
//
// COUPNUM(settlement,maturity,frequency,[basis])
//
func (fn *formulaFuncs) COUPNUM(argsList *list.List) formulaArg {
args := fn.prepareCouponArgs("COUPNUM", argsList)
if args.Type != ArgList {
return args
}
maturity, dateValue := timeFromExcelTime(args.List[1].Number, false), fn.COUPPCD(argsList)
date := timeFromExcelTime(dateValue.Number, false)
months := (maturity.Year()-date.Year())*12 + int(maturity.Month()) - int(date.Month())
return newNumberFormulaArg(float64(months) * args.List[2].Number / 12.0)
}
// COUPPCD function returns the previous coupon date, before the settlement
// date for a security. The syntax of the function is:
//

25
calc_test.go
View File

@ -1393,6 +1393,13 @@ func TestCalcCellValue(t *testing.T) {
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,20,15%,4)": "0",
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,6,15%,4)": "0.6875",
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,0,15%,4)": "16.8125",
// COUPNCD
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",4)": "40568",
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",4,0)": "40568",
"=COUPNCD(\"10/25/2011\",\"01/01/2012\",4)": "40909",
// COUPNUM
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",4)": "8",
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",4,0)": "8",
// COUPPCD
"=COUPPCD(\"01/01/2011\",\"10/25/2012\",4)": "40476",
"=COUPPCD(\"01/01/2011\",\"10/25/2012\",4,0)": "40476",
@ -2689,6 +2696,24 @@ func TestCalcCellValue(t *testing.T) {
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,1,-1)": "#NUM!",
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,1,20%,\"\")": "#NUM!",
"=AMORLINC(150,\"01/01/2015\",\"09/30/2015\",20,1,20%,5)": "invalid basis",
// COUPNCD
"=COUPNCD()": "COUPNCD requires 3 or 4 arguments",
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",4,0,0)": "COUPNCD requires 3 or 4 arguments",
"=COUPNCD(\"\",\"10/25/2012\",4)": "#VALUE!",
"=COUPNCD(\"01/01/2011\",\"\",4)": "#VALUE!",
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",\"\")": "#VALUE!",
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",4,\"\")": "#NUM!",
"=COUPNCD(\"01/01/2011\",\"10/25/2012\",3)": "#NUM!",
"=COUPNCD(\"10/25/2012\",\"01/01/2011\",4)": "COUPNCD requires maturity > settlement",
// COUPNUM
"=COUPNUM()": "COUPNUM requires 3 or 4 arguments",
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",4,0,0)": "COUPNUM requires 3 or 4 arguments",
"=COUPNUM(\"\",\"10/25/2012\",4)": "#VALUE!",
"=COUPNUM(\"01/01/2011\",\"\",4)": "#VALUE!",
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",\"\")": "#VALUE!",
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",4,\"\")": "#NUM!",
"=COUPNUM(\"01/01/2011\",\"10/25/2012\",3)": "#NUM!",
"=COUPNUM(\"10/25/2012\",\"01/01/2011\",4)": "COUPNUM requires maturity > settlement",
// COUPPCD
"=COUPPCD()": "COUPPCD requires 3 or 4 arguments",
"=COUPPCD(\"01/01/2011\",\"10/25/2012\",4,0,0)": "COUPPCD requires 3 or 4 arguments",