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#ifndef _SPARSE_VECTOR_H_
#define _SPARSE_VECTOR_H_
#include "fast_sparse_vector.h"
#define SparseVector FastSparseVector
template <class T, typename S>
SparseVector<T> operator*(const SparseVector<T>& a, const S& b) {
SparseVector<T> result = a;
return result *= b;
}
template <class T>
SparseVector<T> operator*(const SparseVector<T>& a, const double& b) {
SparseVector<T> result = a;
return result *= b;
}
template <class T, typename S>
SparseVector<T> operator/(const SparseVector<T>& a, const S& b) {
SparseVector<T> result = a;
return result /= b;
}
template <class T>
SparseVector<T> operator/(const SparseVector<T>& a, const double& b) {
SparseVector<T> result = a;
return result /= b;
}
#include "fdict.h"
template <class O, typename T>
inline void print(O &o,const SparseVector<T>& v, const char* kvsep="=",const char* pairsep=" ",const char* pre="",const char* post="") {
o << pre;
bool first=true;
for (typename SparseVector<T>::const_iterator i=v.begin(),e=v.end();i!=e;++i) {
if (first)
first=false;
else
o<<pairsep;
o<<FD::Convert(i->first)<<kvsep<<i->second;
}
o << post;
}
template <typename T>
inline std::ostream& operator<<(std::ostream& out, const SparseVector<T>& v) {
print(out, v);
return out;
}
namespace B64 {
void Encode(double objective, const SparseVector<double>& v, std::ostream* out);
// returns false if failed to decode
bool Decode(double* objective, SparseVector<double>* v, const char* data, size_t size);
}
#endif
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