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Added comparison operators.

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This commit is contained in:
Neil MacIntosh
2016-05-29 14:05:09 -07:00
parent 25ff7eca1f
commit d63c9803da
2 changed files with 30 additions and 18 deletions
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include/span.h
+12 -8
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@@ -481,26 +481,30 @@ private:
};
#if 0 // TODO
// [span.comparison], span comparison operators
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator==(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
constexpr bool operator==(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return std::equal(l.begin(), l.end(), r.begin(), r.end()); }
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator!=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
constexpr bool operator!=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return !(l == r); }
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator<(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
constexpr bool operator<(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end()); }
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator<=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
constexpr bool operator<=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return !(l > r); }
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator>(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
constexpr bool operator>(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return r < l; }
template <class ElementType, ptrdiff_t Extent>
constexpr bool operator>=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) const noexcept;
#endif
constexpr bool operator>=(const span<ElementType, Extent>& l, const span<ElementType, Extent>& r) noexcept
{ return !(l < r); }
#if 0 // TODO