mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-11-15 22:19:07 +00:00
34 lines
748 B
C++
34 lines
748 B
C++
#ifndef STDXfg_ALGORITHMX_H
|
|
#define STDXfg_ALGORITHMX_H
|
|
|
|
// Some std:: namespace enhancements
|
|
|
|
#include <algorithm>
|
|
|
|
namespace stdx_fg {
|
|
|
|
template <class ForwardIterator, class T, class Compare>
|
|
ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, const T& val, Compare comp)
|
|
{
|
|
ForwardIterator it;
|
|
typename std::iterator_traits<ForwardIterator>::difference_type count, step;
|
|
count = std::distance(first,last);
|
|
while(count > 0)
|
|
{
|
|
it = first;
|
|
step = count/2;
|
|
std::advance (it,step);
|
|
if (comp(*it, val))
|
|
{
|
|
first= ++it;
|
|
count -= step+1;
|
|
}
|
|
else
|
|
count = step;
|
|
}
|
|
return first;
|
|
}
|
|
|
|
} // end namespace stdx_fg
|
|
|
|
#endif
|