Remove <experimental/numeric>; use <numeric> instead. See https://libcxx.llvm.org/TS_deprecation.html

llvm-svn: 323975
diff --git a/libcxx/include/experimental/numeric b/libcxx/include/experimental/numeric
index d784c08..14a6640 100644
--- a/libcxx/include/experimental/numeric
+++ b/libcxx/include/experimental/numeric
@@ -8,112 +8,4 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP_EXPERIMENTAL_NUMERIC
-#define _LIBCPP_EXPERIMENTAL_NUMERIC
-/*
-    experimental/numeric synopsis
-
-// C++1z
-namespace std {
-namespace experimental {
-inline namespace fundamentals_v2 {
-
-  // 13.1.2, Greatest common divisor
-  template<class M, class N>
-  constexpr common_type_t<M,N> gcd(M m, N n);
-
-  // 13.1.3, Least common multiple
-  template<class M, class N>
-  constexpr common_type_t<M,N> lcm(M m, N n);
-
-} // namespace fundamentals_v2
-} // namespace experimental
-} // namespace std
-
- */
-
-#include <experimental/__config>
-#include <numeric>
-#include <type_traits>              // is_integral
-#include <limits>                   // numeric_limits
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-#if _LIBCPP_STD_VER > 11
-
-_LIBCPP_BEGIN_NAMESPACE_LFTS_V2
-
-template <typename _Result, typename _Source, bool _IsSigned = is_signed<_Source>::value> struct __abs;
-
-template <typename _Result, typename _Source>
-struct __abs<_Result, _Source, true> {
-    _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
-    _Result operator()(_Source __t) const noexcept
-    {
-    if (__t >= 0) return __t;
-    if (__t == numeric_limits<_Source>::min()) return -static_cast<_Result>(__t);
-    return -__t;
-    }
-};
-
-template <typename _Result, typename _Source>
-struct __abs<_Result, _Source, false> {
-    _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
-    _Result operator()(_Source __t) const noexcept { return __t; }
-};
-
-
-template<class _Tp>
-_LIBCPP_CONSTEXPR _LIBCPP_HIDDEN
-inline _Tp __gcd(_Tp __m, _Tp __n)
-{
-    static_assert((!is_signed<_Tp>::value), "" );
-    return __n == 0 ? __m : _VSTD_LFTS_V2::__gcd<_Tp>(__n, __m % __n);
-}
-
-
-template<class _Tp, class _Up>
-_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
-common_type_t<_Tp,_Up>
-gcd(_Tp __m, _Up __n)
-{
-    static_assert((is_integral<_Tp>::value && is_integral<_Up>::value), "Arguments to gcd must be integer types");
-    static_assert((!is_same<typename remove_cv<_Tp>::type, bool>::value), "First argument to gcd cannot be bool" );
-    static_assert((!is_same<typename remove_cv<_Up>::type, bool>::value), "Second argument to gcd cannot be bool" );
-    using _Rp = common_type_t<_Tp,_Up>;
-    using _Wp = make_unsigned_t<_Rp>;
-    return static_cast<_Rp>(_VSTD_LFTS_V2::__gcd(
-      static_cast<_Wp>(__abs<_Rp, _Tp>()(__m)),
-      static_cast<_Wp>(__abs<_Rp, _Up>()(__n))));
-}
-
-template<class _Tp, class _Up>
-_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
-common_type_t<_Tp,_Up>
-lcm(_Tp __m, _Up __n)
-{
-    static_assert((is_integral<_Tp>::value && is_integral<_Up>::value), "Arguments to lcm must be integer types");
-    static_assert((!is_same<typename remove_cv<_Tp>::type, bool>::value), "First argument to lcm cannot be bool" );
-    static_assert((!is_same<typename remove_cv<_Up>::type, bool>::value), "Second argument to lcm cannot be bool" );
-    if (__m == 0 || __n == 0)
-        return 0;
-
-    using _Rp = common_type_t<_Tp,_Up>;
-    _Rp __val1 = __abs<_Rp, _Tp>()(__m) / _VSTD_LFTS_V2::gcd(__m, __n);
-    _Rp __val2 = __abs<_Rp, _Up>()(__n);
-    _LIBCPP_ASSERT((numeric_limits<_Rp>::max() / __val1 > __val2), "Overflow in lcm");
-    return __val1 * __val2;
-}
-
-_LIBCPP_END_NAMESPACE_LFTS_V2
-
-#endif /* _LIBCPP_STD_VER > 11 */
-
-_LIBCPP_POP_MACROS
-
-#endif /* _LIBCPP_EXPERIMENTAL_NUMERIC */
+#error "<experimental/numeric> has been removed. Use <numeric> instead."