Created
February 24, 2016 03:58
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#include <kv/kraw-approx.hpp> | |
#include <kv/defint.hpp> | |
namespace ub = boost::numeric::ublas; | |
typedef kv::interval<double> itv; | |
struct Func { | |
template <class T> ub::vector<T> operator() (const ub::vector<T>& x) { | |
static T p = kv::constants<T>::pi(); | |
static T c1 = kv::constants<T>::str("3.14"); | |
ub::vector<T> y(1); | |
y(0) = p * x(0) * sin(11 / x(0)) - 11 * c1; | |
return y; | |
} | |
}; | |
template <class TT> | |
struct Func2 { | |
TT r; | |
Func2(TT r) : r(r) {} | |
template <class T> T operator() (const T& x) { | |
static T p = kv::constants<T>::pi(); | |
return 2 * p * r * sin(x / r); | |
} | |
}; | |
int main() | |
{ | |
ub::vector<itv> ix; | |
ub::vector<itv::base_type> x; | |
bool b; | |
std::cout.precision(12); | |
x.resize(1); | |
ix.resize(1); | |
x(0) = 200.; | |
b = kv::krawczyk_approx(Func(), x, ix, 5, false); | |
if (b == false) { | |
std::cout << "fail\n"; | |
return 1; | |
} else { | |
std::cout << ix(0) << "\n"; | |
} | |
std::cout << kv::defint_autostep(Func2<itv>(ix(0)), itv(0), itv(11), 12) << "\n"; | |
} |
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