НЕ получается вывести Y, подскажите в чем ошибка и как исправить?(
24.04.2013, 20:07. Показов 395. Ответов 0
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| //---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "main.h"
#include "library.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
String S;
int N;
float L0, L9, X1, X0, E1, E, Y;
N = 3.0;
L0 = 1.0;
L9 = 10.0;
E = 0.01;
E1 = 0.01;
X1 = L9;
X0 = L0;
float *L = new float [N];
for (int i=0; i<N; i++)
{ if(i==0)
{
L[0]=L9;
}
else
{
L[i] = 0;
}
}
Tab rt;
float **mas = Get_mem3(N,N);
Vuvod_mas2(Memo1, N, mas);
rt = post(L0, L9, N, mas);
rt = Koff(N, rt);
for (int j = 0; j<N; j++)
{
Y = xar(N, X1, X0, rt, j, E1, E, L);
L[j] = Y;
}
Del_mem1(L); // óäàëÿåì ïàìÿòü..
Del_mem2(N,mas);
} |
|
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| //---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "library.h"
#include "math.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
float *Get_mem1(int n)
{
float *mas = new float [n];
for (int i=0; i<n; i++)
{
mas[i] = 0;
}
return mas;
}
void Del_mem1(float *buffer)
{
delete[]buffer;
}
float **Get_mem2(int x, int y)
{
float **buffer;
buffer = new float *[x];
for (int i=0; i<x; i++)
{
buffer[i]=new float [y];
}
for (int j=0; j<x; j++)
{
for (int k=0; k<x; k++)
{
buffer[j][k] = 0;
}
}
return buffer;
}
void **Del_mem2(int x, float **buffer)
{
for (int i=0; i<x; i++)
{
delete[]buffer[i];
}
delete[]buffer;
return 0;
}
void Vuvod_mas2(TMemo *Memox, int N, float **mas)
{
String S;
for (int i=0; i<N; i++)
{
S.sprintf("");
Memox -> Lines -> Add(S);
for(int j=0; j<N; j++)
S.cat_sprintf("%5.3lf ",mas[i][j]);
Memox -> Lines -> Add(S);
}
}
float Det_Matrix ( float **Matrix, int n)
{
float t, d , max;
int i, j , k;
d = 1.0;
for ( k = 0; k < n; k ++)
{
max = 0.0;
for (i = k; i < n ; i ++)
{
t = Matrix[i][k];
if ( fabs (t) > fabs (max))
{
max = t; j = i;
}
}
if ( fabs (max) < 0.000001) return 0;
if ( j != k)
{
d =- d;
for ( i = k; i < n;i ++)
{
t = Matrix[j][i];
Matrix[j][i] = Matrix[k][i];
Matrix[k][i] = t;
}
}
for ( i = k + 1; i < n; i ++)
{
t = Matrix[i][k] /max;
for ( j = k +1; j < n; j ++)
{
Matrix[i][j] = Matrix[i][j]- t *Matrix[k][j];
}
}
d = d* Matrix[k][k];
}
return d;
}
Tab post(float L0, float L9, int N,float **B)
{
Tab mas;
float H,S;
H = (L9-L0)/N;
float R1 = L0;
float **A = Get_mem2(N,N);
mas.F =Get_mem1(N);
mas.X =Get_mem1(N);
for (int M = 0; M <= N; M++)
{
for (int i = 0; i < N; i++)
{
for (int j = 0; j < N; j++)
{
A[i][j]=B[i][j];
if (i==j)
{
A[i][j]=B[i][j]-R1;
}
}
}
S = Det_Matrix(A,N);
mas.F[M]=S;
mas.X[M]=R1;
R1 = R1 +H;
}
Del_mem2(N,A);
return mas;
}
Tab Koff(int n, Tab mas)
{
for (int j=1; j<=n; j++)
{
float P = mas.F[j-1];
float R = mas.X[j-1];
for (int i=j; i<=n; i++)
{
mas.F[i] = (P-mas.F[i])/(R-mas.X[i]);
}
}
return mas;
}
float pol(int N, float Y, Tab mas, int j, float *L)
{
float P = mas.F[N];
for(int i =N-1; i>=0;i--)
{
P=mas.F[i]+(Y-mas.X[i])*P;
}
for (int i=0; i<j; i++)
{
P=P/(L[i]-Y);
}
return P;
}
float xar(int N, float X1,float X0, Tab mas, int j, float E1, float E, float *L)
{
float Y = X1;
float P = pol(N, Y,mas, j, L);
float R = X0-X1;
Y=X0;
float D = P;
P = pol(N, Y,mas, j, L);
if (fabs(P)<E1)
{
return Y;
}
R = R/(D-P)*P;
Y=Y+R;
while (fabs(R)>E)
{
D = P;
P = pol(N, Y,mas, j, L);
if (fabs(P)<E1)
{
return Y;
}
R = R/(D-P)*P;
Y=Y+R;
}
Del_mem1(mas.F);
Del_mem1(mas.X);
return Y;
}
float **Get_mem3(int x, int y)
{
float **buffer;
buffer = new float *[x];
for (int i=0; i<x; i++)
{
buffer[i]=new float [y];
}
for (int j=0; j<x; j++)
{
for (int k=0; k<x; k++)
{
buffer[j][k] = 5;
}
}
return buffer;
} |
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| //---------------------------------------------------------------------------
#ifndef libraryH
#define libraryH
struct Tab
{
float *X;
float *F;
};
float *Get_mem1(int n);
void Del_mem1(float *buffer);
float **Get_mem2(int x, int y);
void **Del_mem2(int x, float **buffer);
void Vuvod_mas2(TMemo *Memox, int N, float **mas);
float Det_Matrix ( float **Matrix, int n);
Tab post(float L0, float L9, int N,float **B);
Tab Koff(int n, Tab mas);
float pol(int N, float Y, Tab mas, int j, float *L);
float xar(int N, float X1,float X0, Tab mas, int j, float E1, float E, float *L);
float **Get_mem3(int x, int y); |
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