shoot.txt

来自「Visual Basic 常用数学算法集书中收录了所有代码」· 文本 代码 · 共 25 行

Sub SHOOT(NVAR, V(), DELV(), N2, X1, X2, EPS, H1, HMIN, F(), DV())
    Dim Y(20), DFDV(20, 20), INDX(20), XP(200), YP(10, 200)
    Call Load(X1, V(), Y())
    Call ODEINT(Y(), NVAR, X1, X2, EPS, H1, HMIN, NOK, NBAD, XP(), YP())
    Call SCORE(X2, Y(), F())
    For IV = 1 To N2
        SAV = V(IV)
        V(IV) = V(IV) + DELV(IV)
        Call Load(X1, V(), Y())
        Call ODEINT(Y(), NVAR, X1, X2, EPS, H1, HMIN, NOK, NBAD, XP(), YP())
        Call SCORE(X2, Y(), DV())
        For I = 1 To N2
            DFDV(I, IV) = (DV(I) - F(I)) / DELV(IV)
        Next I
        V(IV) = SAV
    Next IV
    For IV = 1 To N2
        DV(IV) = -F(IV)
    Next IV
    Call LUDCMP(DFDV(), N2, INDX(), DET)
    Call LUBKSB(DFDV(), N2, INDX(), DV())
    For IV = 1 To N2
        V(IV) = V(IV) + DV(IV)
    Next IV
End Sub