[depr.function.pointer.adaptors]

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-#### Adaptors for pointers to functions <a id="depr.function.pointer.adaptors">[[depr.function.pointer.adaptors]]</a>
-To allow pointers to (unary and binary) functions to work with function
-adaptors the library provides:
-``` cpp
-template <class Arg, class Result>
-class pointer_to_unary_function : public unary_function<Arg, Result> {
-public:
-  explicit pointer_to_unary_function(Result (*f)(Arg));
-  Result operator()(Arg x) const;
-};
-```
-`operator()` returns `f(x)`.
-``` cpp
-template <class Arg, class Result>
-  pointer_to_unary_function<Arg, Result> ptr_fun(Result (*f)(Arg));
-```
-*Returns:* `pointer_to_unary_function<Arg, Result>(f)`.
-``` cpp
-template <class Arg1, class Arg2, class Result>
-class pointer_to_binary_function :
-  public binary_function<Arg1,Arg2,Result> {
-public:
-  explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2));
-  Result operator()(Arg1 x, Arg2 y) const;
-};
-```
-`operator()` returns `f(x,y)`.
-``` cpp
-template <class Arg1, class Arg2, class Result>
-  pointer_to_binary_function<Arg1,Arg2,Result>
-    ptr_fun(Result (*f)(Arg1, Arg2));
-```
-*Returns:* `pointer_to_binary_function<Arg1,Arg2,Result>(f)`.
-``` cpp
-int compare(const char*, const char*);
-replace_if(v.begin(), v.end(),
-  not1(bind2nd(ptr_fun(compare), "abc")), "def");
-```
-replaces each `abc` with `def` in sequence `v`.

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