libcxx initial import
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/numeric b/include/numeric
new file mode 100644
index 0000000..4600890
--- /dev/null
+++ b/include/numeric
@@ -0,0 +1,183 @@
+// -*- C++ -*-
+//===---------------------------- numeric ---------------------------------===//
+//
+// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_NUMERIC
+#define _LIBCPP_NUMERIC
+
+/*
+ numeric synopsis
+
+namespace std
+{
+
+template <class InputIterator, class T>
+ T
+ accumulate(InputIterator first, InputIterator last, T init);
+
+template <class InputIterator, class T, class BinaryOperation>
+ T
+ accumulate(InputIterator first, InputIterator last, T init, BinaryOperation binary_op);
+
+template <class InputIterator1, class InputIterator2, class T>
+ T
+ inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, T init);
+
+template <class InputIterator1, class InputIterator2, class T, class BinaryOperation1, class BinaryOperation2>
+ T
+ inner_product(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
+ T init, BinaryOperation1 binary_op1, BinaryOperation2 binary_op2);
+
+template <class InputIterator, class OutputIterator>
+ OutputIterator
+ partial_sum(InputIterator first, InputIterator last, OutputIterator result);
+
+template <class InputIterator, class OutputIterator, class BinaryOperation>
+ OutputIterator
+ partial_sum(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);
+
+template <class InputIterator, class OutputIterator>
+ OutputIterator
+ adjacent_difference(InputIterator first, InputIterator last, OutputIterator result);
+
+template <class InputIterator, class OutputIterator, class BinaryOperation>
+ OutputIterator
+ adjacent_difference(InputIterator first, InputIterator last, OutputIterator result, BinaryOperation binary_op);
+
+} // std
+
+*/
+
+#include <__config>
+#include <iterator>
+
+#pragma GCC system_header
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _InputIterator, class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_Tp
+accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)
+{
+ for (; __first != __last; ++__first)
+ __init = __init + *__first;
+ return __init;
+}
+
+template <class _InputIterator, class _Tp, class _BinaryOperation>
+inline _LIBCPP_INLINE_VISIBILITY
+_Tp
+accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op)
+{
+ for (; __first != __last; ++__first)
+ __init = __binary_op(__init, *__first);
+ return __init;
+}
+
+template <class _InputIterator1, class _InputIterator2, class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_Tp
+inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init)
+{
+ for (; __first1 != __last1; ++__first1, ++__first2)
+ __init = __init + *__first1 * *__first2;
+ return __init;
+}
+
+template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
+inline _LIBCPP_INLINE_VISIBILITY
+_Tp
+inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
+ _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
+{
+ for (; __first1 != __last1; ++__first1, ++__first2)
+ __init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
+ return __init;
+}
+
+template <class _InputIterator, class _OutputIterator>
+inline _LIBCPP_INLINE_VISIBILITY
+_OutputIterator
+partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
+{
+ if (__first != __last)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t(*__first);
+ *__result = __t;
+ for (++__first, ++__result; __first != __last; ++__first, ++__result)
+ {
+ __t = __t + *__first;
+ *__result = __t;
+ }
+ }
+ return __result;
+}
+
+template <class _InputIterator, class _OutputIterator, class _BinaryOperation>
+inline _LIBCPP_INLINE_VISIBILITY
+_OutputIterator
+partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
+ _BinaryOperation __binary_op)
+{
+ if (__first != __last)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t(*__first);
+ *__result = __t;
+ for (++__first, ++__result; __first != __last; ++__first, ++__result)
+ {
+ __t = __binary_op(__t, *__first);
+ *__result = __t;
+ }
+ }
+ return __result;
+}
+
+template <class _InputIterator, class _OutputIterator>
+inline _LIBCPP_INLINE_VISIBILITY
+_OutputIterator
+adjacent_difference(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
+{
+ if (__first != __last)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t1(*__first);
+ *__result = __t1;
+ for (++__first, ++__result; __first != __last; ++__first, ++__result)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t2(*__first);
+ *__result = __t2 - __t1;
+ __t1 = __t2;
+ }
+ }
+ return __result;
+}
+
+template <class _InputIterator, class _OutputIterator, class _BinaryOperation>
+inline _LIBCPP_INLINE_VISIBILITY
+_OutputIterator
+adjacent_difference(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
+ _BinaryOperation __binary_op)
+{
+ if (__first != __last)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t1(*__first);
+ *__result = __t1;
+ for (++__first, ++__result; __first != __last; ++__first, ++__result)
+ {
+ typename iterator_traits<_InputIterator>::value_type __t2(*__first);
+ *__result = __binary_op(__t2, __t1);
+ __t1 = __t2;
+ }
+ }
+ return __result;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_NUMERIC