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			69 lines
		
	
	
		
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			69 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
|  | [/ | ||
|  |     Copyright 2010 Neil Groves | ||
|  |     Distributed under the Boost Software License, Version 1.0. | ||
|  |     (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
|  | /] | ||
|  | [section:adjacent_difference adjacent_difference] | ||
|  | 
 | ||
|  | [heading Prototype] | ||
|  | 
 | ||
|  | `` | ||
|  | template< | ||
|  |     class SinglePassRange, | ||
|  |     class OutputIterator | ||
|  |     > | ||
|  | OutputIterator adjacent_difference( | ||
|  |     const SinglePassRange& source_rng, | ||
|  |     OutputIterator out_it); | ||
|  | 
 | ||
|  | template< | ||
|  |     class SinglePassRange, | ||
|  |     class OutputIterator, | ||
|  |     class BinaryOperation | ||
|  |     > | ||
|  | OutputIterator adjacent_difference( | ||
|  |     const SinglePassRange& source_rng, | ||
|  |     OutputIterator out_it, | ||
|  |     BinaryOperation op); | ||
|  | `` | ||
|  | 
 | ||
|  | [heading Description] | ||
|  | 
 | ||
|  | `adjacent_difference` calculates the differences of adjacent_elements in `rng`. | ||
|  | 
 | ||
|  | The first version of `adjacent_difference` uses `operator-()` to calculate the differences. | ||
|  | The second version uses `BinaryOperation` instead of `operator-()`. | ||
|  | 
 | ||
|  | [heading Definition] | ||
|  | 
 | ||
|  | Defined in the header file `boost/range/numeric.hpp` | ||
|  | 
 | ||
|  | [heading Requirements] | ||
|  | 
 | ||
|  | [heading For the first version] | ||
|  | 
 | ||
|  | # `SinglePassRange` is a model of the __single_pass_range__ Concept. | ||
|  | # `OutputIterator` is a model of the `OutputIteratorConcept`. | ||
|  | # If `x` and `y` are objects of `SinglePassRange`'s value type, then `x - y` is defined. | ||
|  | # The value type of `SinglePassRange` is convertible to a type in `OutputIterator`'s set of value types. | ||
|  | # The return type of `x - y` is convertible to a type in `OutputIterator`'s set of value types. | ||
|  | 
 | ||
|  | [heading For the second version] | ||
|  | 
 | ||
|  | # `SinglePassRange` is a model of the __single_pass_range__ Concept. | ||
|  | # `OutputIterator` is a model of the `OutputIteratorConcept`. | ||
|  | # `BinaryOperation` is a model of the `BinaryFunctionConcept`. | ||
|  | # The value type of `SinglePassRange` is convertible to `BinaryOperation`'s first and second argument types. | ||
|  | # The value type of `SinglePassRange` is convertible to a type in `OutputIterator`'s set of value types. | ||
|  | # The result type of `BinaryOperation` is convertible to a type in `OutputIterator`'s set of value types. | ||
|  | 
 | ||
|  | [heading Precondition:] | ||
|  | 
 | ||
|  | `[result, result + distance(rng))` is a valid range. | ||
|  | 
 | ||
|  | [heading Complexity] | ||
|  | 
 | ||
|  | Linear. If `empty(rng)` then zero applications, otherwise `distance(rng) - 1` applications are performed. | ||
|  | 
 | ||
|  | [endsect] |