本文整理汇总了C++中Piecewise::secondDerivative方法的典型用法代码示例。如果您正苦于以下问题：C++ Piecewise::secondDerivative方法的具体用法？C++ Piecewise::secondDerivative怎么用？C++ Piecewise::secondDerivative使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Piecewise的用法示例。
在下文中一共展示了Piecewise::secondDerivative方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main()
{
cout << "Testing MathTL::(Cardinal)Spline ..." << endl;
cout << "* some point values of phi_{j,k}, d=2, j=1, k=0:" << endl;
for (double x = -1.5; x <= 2.5; x+=0.2) {
cout << " phi(" << x << ")="
<< EvaluateCardinalBSpline_td(2, 0, 1.5, x) << endl;
}
cout << "* some point values of phi_{j,k}, d=2, j=1, k=0: with expand as picewise" << endl;
for (double x = -1.5; x <= 2.5; x+=0.2) {
Piecewise<double> p;
p = ExpandBspline<3>(1, -1);
cout << " phi(" << x << ")="
<< p(x) << endl;
}
cout << "* some point values of Schoenberg Primal [P] function phi_{j,k}(x) = 2^{j/2}N_{k-d/2,d}(2^jx):" << endl;
for (double x = -0.6; x <= 1.6; x+=0.2){
cout << " N_{-1,2}'(" << x << ")="
<< EvaluateSchoenbergBSpline_td_xx<2>(2, 5,x) << endl;
}
cout << "* some point values of Schoenberg Primal [P] function phi_{j,k}(x) = 2^{j/2}N_{k-d/2,d}(2^jx) with expand as picewise:" << endl;
for (double x = -0.6; x <= 1.6; x+=0.2) {
Piecewise<double> p;
p = ExpandSchoenbergBspline<2>(2, 5,0);
cout << " N(" << x << ")="
<< p.secondDerivative(x) << endl;
}
#if 0
cout << "* some point values of Schoenberg Primal [P] function phi_{j,k}(x) = 2^{j/2}N_{k-d/2,d}(2^jx):" << endl;
cout << EvaluateSchoenbergBSpline_td<4>(0, -1, 0.0000) << endl;
cout << EvaluateSchoenbergBSpline_td_x<4>(0, -1, 0.0000) << endl;
cout << EvaluateSchoenbergBSpline_td_xx<4>(0, -1, 0.0000) << endl;
double j,a,b,c,d;
j = (EvaluateSchoenbergBSpline_td_xx<4>(0, -1, 0.00002) - EvaluateSchoenbergBSpline_td_xx<4>(0, -1, 0.00001))/(0.00001);
cout << j << endl;
a= 1<<5;
cout << "a=" << a << endl;
//double EvaluateSchoenbergBSpline_td(const int j, const int k, const double x)
Array1D<double> values1(80);
for (double x = -1.0; x <= 3; x+=0.05) {
values1[(int)floor((x+1.0)*20)] = EvaluateSchoenbergBSpline_td<2>(0, 1, x);
}
std::ofstream fs1("Schoenberg1(0,0.5).m");
SampledMapping<1> sm1(Grid<1>(-1.0, 3.0, 80), values1);
sm1.matlab_output(fs1);
fs1.close();
//EvaluateCardinalBSpline_td(const int j, const int k, const double x)
Array1D<double> values2(80);
for (double x = -1.0; x <= 3; x+=0.05) {
values2[(int)floor((x+1.0)*20)] = EvaluateCardinalBSpline_td<2>(0, 1, x);
}
std::ofstream fs2("Cardinal1(0,0.5).m");
SampledMapping<1> sm2(Grid<1>(-1.0, 3.0, 80), values2);
sm2.matlab_output(fs2);
fs2.close();
#endif
}