## greater_equal

    Function Object

- Summary
- Data Type and Member Function Indexes
- Synopsis
- Description
- Warnings
- See Also

### Summary

A binary function object that returns `true` if its first argument is greater than or equal to its second

### Data Type and Member Function Indexes
(exclusive of constructors and destructors)

None

### Synopsis

    #include <functional>
    template <class T>
    struct greater_equal ; : binary_function<T, T, bool> {
      bool operator() (const T&, const T&) const;
    };

### Description

greater_equal is a binary function object. Its `operator()` returns `true` if `x` is greater than or equal to `y`. You can pass a greater_equal object to any algorithm that requires a binary function. For example, the sort algorithm can accept a binary function as an alternate comparison object to sort a sequence. greater_equal would be used in that algorithm in the following manner:

    vector<int> vec1;
    .
    .
    sort(vec1.begin(), vec1.end(),greater_equal<int>());

After this call to sort, `vec1` is sorted in descending order.

### Warnings

If your compiler does not support default template parameters, then you always need to supply the `Allocator` template argument. For instance, you have to write:

`vector<int, allocator<int> >`

instead of

`vector<int>`

If your compiler does not support namespaces, then you do not need the using declaration for `std`.

### See Also

Function Objects

Copyright (c) 1998, Rogue Wave Software, Inc.
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OEM Release, June 1998