valarray.h

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#ifndef VALARRAY_H_INCLUDED
#define VALARRAY_H_INCLUDED
 
 
#include <valarray>
#include <ostream>
 
#include <examples.h>
 
template<class T> 
inline std::ostream&
insert_valarray (std::ostream &out, const std::valarray<T> &v)
{
    out << "[";
    for (std::size_t i = 0; i < v.size (); i++) {
        out << v [i];
        if (i < v.size () - 1)
            out << ",";
    }
    return out << "]";
}
 
// Non-templatized insertion operators necessary for implicit
// conversion from slice_array<T> (etc.) to valarray<T>. (the
// conversion won't work in template argument deduction).
inline std::ostream& operator<< (std::ostream &out, const std::valarray<int> &v)
{
    return insert_valarray (out, v);
}
 
std::ostream& operator<< (std::ostream &out, const std::valarray<bool> &v)
{
    return insert_valarray (out, v);
}
 
#endif   // VALARRAY_H_INCLUDED