?? polymultip.cpp
字號:
//PolyMultip.cpp 兩一維實(復)多項式相乘示例
#include <iostream> //輸入輸出流頭文件
#include <polynomials.h> //多項式頭文件
using namespace std; //名字空間
void main()
{
cout << "PolyMultip()" << endl << endl;
//多項式系數為實數
cout << "Coefficients are real. Result is real: " << endl;
double dCoffP[6] = {4.2, -6.1, 5.4, 2.5, -1.8, 3.6};
double dCoffQ[4] = {2.92, 3.71, -6.45, 2.64};
valarray<double> vdCoffP(dCoffP,6);
valarray<double> vdCoffQ(dCoffQ,4);
valarray<double> vdCoffS(9);
cout.setf(ios::fixed|ios::left); //輸出數據為定點法,靠左對齊
cout.precision(4); //精度4位
PolyMultip(vdCoffP, vdCoffQ, vdCoffS);
for (size_t st = 0; st < 9; st++)
{
cout << "dCoffS(" << st << ") = " << vdCoffS[st] << endl;
}
cout << endl;
//多項式系數為復數
cout << "Coefficients are complex. Result is complex: " << endl;
complex<double> cdCoffP[7] =
{
complex<double>(1.2, 3.4),
complex<double>(-3.2, -4.8), complex<double>( 2.7, -6.4),
complex<double>(3.1, 5.9), complex<double>( 3.5, 3.9),
complex<double>(12.1, -5.4), complex<double>(-2.5, 8.4),
};
complex<double> cdCoffQ[6] =
{
complex<double>( 0.9, 1.4), complex<double>(-0.5, 1.4),
complex<double>(-0.9, -1.8), complex<double>(-1.1, -1.4),
complex<double>( 1.1, 1.9), complex<double>(-1.5, 1.9),
};
valarray<complex<double> > vcdCoffP(cdCoffP,7);
valarray<complex<double> > vcdCoffQ(cdCoffQ,6);
valarray<complex<double> > vcdCoffS(12);
//complex<double> cdCoffS[12];
PolyMultip(vcdCoffP, vcdCoffQ, vcdCoffS);
for (st = 0; st < 12; st++)
{
cout << "cdCoffS(" << st << ") = " << vcdCoffS[st] << endl;
}
cout << endl;
}
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