d4r30.frm

来自「常用数值算法集哈」· FRM 代码 · 共 66 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   2775
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4170
   LinkTopic       =   "Form1"
   ScaleHeight     =   2775
   ScaleWidth      =   4170
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   375
      Left            =   2400
      TabIndex        =   0
      Top             =   2040
      Width           =   1455
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    'PROGRAM D4R30
    'Driver for routine ASS
    Dim ACTUAL(5), B(5), N(5)
    ACTUAL(1) = 3.115203
    ACTUAL(2) = 127.7233
    ACTUAL(3) = 24575.84
    ACTUAL(4) = 1.572973E-12
    ACTUAL(5) = 1.709515E-12
    N(1) = 1
    N(2) = 3
    N(3) = 5
    N(4) = 1
    N(5) = 3
    B(1) = 0.25
    B(2) = 0.25
    B(3) = 0.25
    B(4) = 24#
    B(5) = 24#
    Print
    Print "   N      B       Actual          ASS(N,B)"
    For I = 1 To 5
        Print Tab(4); Format$(N(I), "#0.##");
        Print Tab(10); Format$(B(I), "#0.##");
        Print Tab(16); Format$(ACTUAL(I), ".0000000E+00");
        Print Tab(32); Format$(ASS(N(I), B(I)), ".0000000E+00")
    Next I
End Sub
Function ASS(N, B)
    Dim A(15)
    A(1) = Exp(-B) / B
    If N = 1 Then GoTo 11
    DB = 1# / B
    For I = 2 To N
        A(I) = A(1) + DB * (I - 1) * A(I - 1)
    Next I
11  ASS = A(N)
End Function