#ifndef _STD_ALGORITHM_H
#define _STD_ALGORITHM_H

// from rb3/key decomp

#include <msl_unk.hpp>

namespace std {

    template <class T> inline const T &min(const T &a, const T &b) {
        return b < a ? b : a;
    }

    template <class T> inline const T &max(const T &a, const T &b) {
        return a < b ? b : a;
    }

    template <class T, class _Compare> inline const T &min(const T &a, const T &b, _Compare comp) {
        return comp(b, a) ? b : a;
    }

    template <class T, class _Compare> inline const T &max(const T &a, const T &b, _Compare comp) {
        return comp(a, b) ? b : a;
    }

    template <typename InputIterator, typename Predicate>
    inline InputIterator find_if(InputIterator first, InputIterator last, Predicate p) {
        for (; first != last && !p(*first); ++first) {
        }
        return first;
    }

    template <typename It, typename T> inline It find(It first, It last, const T &value) {
        while (first != last && *first != value) {
            first++;
        }

        return first;
    }

    // adapted from https://github.com/matta/sgi-stl/blob/635eaeef4533214ec140fb17411558ad441d2996/stl/stl_algo.h#L638
    template <typename It, typename T> inline It remove(It first, It last, const T &value) {
        first = find(first, last, value);

        if (first != last) {
            It it = first;

            for (it++; it != last; it++) {
                if (*it != value) {
                    *first = *it;
                    first++;
                }
            }
        }

        return first;
    }

    template <typename T, typename Size, bool V /* ? */> struct __fill_n {
        static inline void fill_n(T *first, Size n, const T &value) {
            for (; n != 0; first++, n--) {
                *first = value;
            }
        }
    };

    template <typename OutputIt /* ? */, typename Size, typename T>
    inline void fill_n(OutputIt *first, Size n, const T &value) {
        __fill_n<OutputIt, Size, false>::fill_n(first, n, value);
    }

    template <typename T> inline T &move(T &p) {
        return p;
    }

    template <typename T> inline void swap(T &a, T &b) {
        T temp = move(a);
        a       = move(b);
        b       = move(temp);
    }
} // namespace std

#endif