min_element.hpp

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// SPDX-License-Identifier: BSL-1.0
 
#ifndef TETL_ALGORITHM_MIN_ELEMENT_HPP
#define TETL_ALGORITHM_MIN_ELEMENT_HPP
 
#include <etl/_functional/less.hpp>
 
namespace etl {

template <typename ForwardIt, typename Compare>
[[nodiscard]] constexpr auto min_element(ForwardIt first, ForwardIt last, Compare comp) -> ForwardIt
{
    if (first == last) {
        return last;
    }
 
    ForwardIt smallest = first;
    ++first;
    for (; first != last; ++first) {
        if (comp(*first, *smallest)) {
            smallest = first;
        }
    }
    return smallest;
}

template <typename ForwardIt>
[[nodiscard]] constexpr auto min_element(ForwardIt first, ForwardIt last) noexcept -> ForwardIt
{
    return etl::min_element(first, last, etl::less());
}
 
} // namespace etl
 
#endif // TETL_ALGORITHM_MIN_ELEMENT_HPP