ViennaCL - The Vienna Computing Library  1.7.0
Free open-source GPU-accelerated linear algebra and solver library.
range.hpp
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1 #ifndef VIENNACL_RANGE_HPP_
2 #define VIENNACL_RANGE_HPP_
3 
4 /* =========================================================================
5  Copyright (c) 2010-2015, Institute for Microelectronics,
6  Institute for Analysis and Scientific Computing,
7  TU Wien.
8  Portions of this software are copyright by UChicago Argonne, LLC.
9 
10  -----------------
11  ViennaCL - The Vienna Computing Library
12  -----------------
13 
14  Project Head: Karl Rupp rupp@iue.tuwien.ac.at
15 
16  (A list of authors and contributors can be found in the manual)
17 
18  License: MIT (X11), see file LICENSE in the base directory
19 ============================================================================= */
20 
25 #include <vector>
26 #include <stddef.h>
27 #include <assert.h>
28 #include "viennacl/forwards.h"
29 
30 namespace viennacl
31 {
32 
37 template<typename SizeT /* see forwards.h for default argument*/,
38  typename DistanceT /* see forwards.h for default argument*/>
39 class basic_range
40 {
41 public:
42  typedef SizeT size_type;
43  typedef DistanceT difference_type;
44  typedef size_type value_type;
45  typedef value_type const_reference;
46  typedef const_reference reference;
47 
48  basic_range() : start_(0), size_(0) {}
49  basic_range(size_type start_index, size_type stop_index) : start_(start_index), size_(stop_index - start_index)
50  {
51  assert(start_index <= stop_index);
52  }
53 
54 
55  size_type start() const { return start_; }
56  size_type size() const { return size_; }
57 
58  const_reference operator()(size_type i) const
59  {
60  assert(i < size());
61  return start_ + i;
62  }
63  const_reference operator[](size_type i) const { return operator()(i); }
64 
65  bool operator==(const basic_range & r) const { return (start_ == r.start_) && (size_ == r.size_); }
66  bool operator!=(const basic_range & r) const { return !(*this == r); }
67 
68 private:
69  size_type start_;
70  size_type size_;
71 };
72 
73 
74 }
75 
76 #endif
size_type value_type
Definition: range.hpp:44
basic_range(size_type start_index, size_type stop_index)
Definition: range.hpp:49
bool operator==(const basic_range &r) const
Definition: range.hpp:65
size_type size() const
Definition: range.hpp:56
This file provides the forward declarations for the main types used within ViennaCL.
const_reference operator[](size_type i) const
Definition: range.hpp:63
const_reference operator()(size_type i) const
Definition: range.hpp:58
Main namespace in ViennaCL. Holds all the basic types such as vector, matrix, etc. and defines operations upon them.
Definition: cpu_ram.hpp:34
const_reference reference
Definition: range.hpp:46
value_type const_reference
Definition: range.hpp:45
size_type start() const
Definition: range.hpp:55
DistanceT difference_type
Definition: range.hpp:43
A range class that refers to an interval [start, stop), where 'start' is included, and 'stop' is excluded.
Definition: forwards.h:424
bool operator!=(const basic_range &r) const
Definition: range.hpp:66