salut j'ai besoin d'utiliser des fonctions d'excel catégorie finance et j ai trouvé un code source mais j ai pas su l'utiliser
voila le code source:
Function B_Yield_ISMA(Sett_d As Date, Mat_d As Date, Cpn As Double, Price As Double) As Double
' Calculates the yield of a coupon bearing bond (ISMA)
Dim L As Double, t As Double, sz As Double, T1 As Double, T2 As Double, T3 As Double
Dim k1 As Double, k2 As Double
Dim n As Long
L = Application.Days360(Sett_d, Mat_d) / 360
n = Int(L)
t = L - n
sz = Cpn * (1 - t)
T1 = Application.Rate(L, Cpn, -Price, 100)
If IsError(T1) Then T2 = -1 Else k1 = (-Application.PV(T1, n, Cpn, 100) + Cpn) / (1 + T1) ^ t - sz
T2 = T1 + 0.00005
k2 = (-Application.PV(T2, n, Cpn, 100) + Cpn) / (1 + T2) ^ t - sz
While Abs(k2 - Price) > 0.00005
T3 = T1 + (Price - k1) * (T2 - T1) / (k2 - k1)
T1 = T2
k1 = k2
T2 = T3
k2 = (-Application.PV(T2, n, Cpn, 100) + Cpn) / (1 + T2) ^ t - sz
Wend
B_Yield_ISMA = T2
End Function