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#include "Integrator.h"
template <typename RealType_>
class SquareFunction
{
struct Params {
Params(RealType_ p_)
: p(p_)
{
}
RealType_ p;
};
public:
typedef RealType_ RealType;
SquareFunction(RealType p)
: p_(p)
{
}
static RealType function(RealType x, void* vp)
{
Params* p = static_cast<Params*>(vp);
return x * x * p->p;
}
Params& params() { return p_; }
private:
Params p_;
};
int main(int argc, char** argv)
{
if (argc != 4) {
std::cerr << "USAGE: " << argv[0] << " x0 total xstep\n";
return 1;
}
double x0 = atof(argv[1]);
SizeType total = atoi(argv[2]);
double xstep = atof(argv[3]);
typedef SquareFunction<double> SquareFunctionType;
SquareFunctionType squareFunction(3.0);
PsimagLite::Integrator<SquareFunctionType> integrator(squareFunction);
PsimagLite::Vector<double>::Type pts(2, 0);
for (SizeType i = 0; i < total; ++i) {
pts[1] = x0 + i * xstep;
std::cout << pts[1] << " " << integrator(pts) << "\n";
}
}
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