Ginkgo  Generated from pipelines/1554403166 branch based on develop. Ginkgo version 1.9.0
A numerical linear algebra library targeting many-core architectures
range.hpp
1 // SPDX-FileCopyrightText: 2017 - 2024 The Ginkgo authors
2 //
3 // SPDX-License-Identifier: BSD-3-Clause
4 
5 #ifndef GKO_PUBLIC_CORE_BASE_RANGE_HPP_
6 #define GKO_PUBLIC_CORE_BASE_RANGE_HPP_
7 
8 
9 #include <type_traits>
10 
11 #include <ginkgo/core/base/math.hpp>
12 #include <ginkgo/core/base/types.hpp>
13 #include <ginkgo/core/base/utils.hpp>
14 
15 
16 namespace gko {
17 
18 
46 struct span {
54  GKO_ATTRIBUTES constexpr span(size_type point) noexcept
55  : span{point, point + 1}
56  {}
57 
64  GKO_ATTRIBUTES constexpr span(size_type begin, size_type end) noexcept
65  : begin{begin}, end{end}
66  {}
67 
73  GKO_ATTRIBUTES constexpr bool is_valid() const { return begin <= end; }
74 
80  GKO_ATTRIBUTES constexpr size_type length() const { return end - begin; }
81 
85  const size_type begin;
86 
90  const size_type end;
91 };
92 
93 
94 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator<(const span& first,
95  const span& second)
96 {
97  return first.end < second.begin;
98 }
99 
100 
101 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator<=(const span& first,
102  const span& second)
103 {
104  return first.end <= second.begin;
105 }
106 
107 
108 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator>(const span& first,
109  const span& second)
110 {
111  return second < first;
112 }
113 
114 
115 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator>=(const span& first,
116  const span& second)
117 {
118  return second <= first;
119 }
120 
121 
122 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator==(const span& first,
123  const span& second)
124 {
125  return first.begin == second.begin && first.end == second.end;
126 }
127 
128 
129 GKO_ATTRIBUTES GKO_INLINE constexpr bool operator!=(const span& first,
130  const span& second)
131 {
132  return !(first == second);
133 }
134 
135 
136 namespace detail {
137 
138 
139 template <size_type CurrentDimension = 0, typename FirstRange,
140  typename SecondRange>
141 GKO_ATTRIBUTES constexpr GKO_INLINE
142  std::enable_if_t<(CurrentDimension >= max(FirstRange::dimensionality,
143  SecondRange::dimensionality)),
144  bool>
145  equal_dimensions(const FirstRange&, const SecondRange&)
146 {
147  return true;
148 }
149 
150 template <size_type CurrentDimension = 0, typename FirstRange,
151  typename SecondRange>
152 GKO_ATTRIBUTES constexpr GKO_INLINE
153  std::enable_if_t<(CurrentDimension < max(FirstRange::dimensionality,
154  SecondRange::dimensionality)),
155  bool>
156  equal_dimensions(const FirstRange& first, const SecondRange& second)
157 {
158  return first.length(CurrentDimension) == second.length(CurrentDimension) &&
159  equal_dimensions<CurrentDimension + 1>(first, second);
160 }
161 
166 template <class...>
167 struct head;
168 
172 template <class First, class... Rest>
173 struct head<First, Rest...> {
174  using type = First;
175 };
176 
180 template <class... T>
181 using head_t = typename head<T...>::type;
182 
183 
184 } // namespace detail
185 
186 
296 template <typename Accessor>
297 class range {
298 public:
302  using accessor = Accessor;
303 
307  static constexpr size_type dimensionality = accessor::dimensionality;
308 
312  ~range() = default;
313 
322  template <
323  typename... AccessorParams,
324  typename = std::enable_if_t<
325  sizeof...(AccessorParams) != 1 ||
326  !std::is_same<
327  range, std::decay<detail::head_t<AccessorParams...>>>::value>>
328  GKO_ATTRIBUTES constexpr explicit range(AccessorParams&&... params)
329  : accessor_{std::forward<AccessorParams>(params)...}
330  {}
331 
344  template <typename... DimensionTypes>
345  GKO_ATTRIBUTES constexpr auto operator()(DimensionTypes&&... dimensions)
346  const -> decltype(std::declval<accessor>()(
347  std::forward<DimensionTypes>(dimensions)...))
348  {
349  static_assert(sizeof...(DimensionTypes) <= dimensionality,
350  "Too many dimensions in range call");
351  return accessor_(std::forward<DimensionTypes>(dimensions)...);
352  }
353 
362  template <typename OtherAccessor>
363  GKO_ATTRIBUTES const range& operator=(
364  const range<OtherAccessor>& other) const
365  {
366  GKO_ASSERT(detail::equal_dimensions(*this, other));
367  accessor_.copy_from(other);
368  return *this;
369  }
370 
384  GKO_ATTRIBUTES const range& operator=(const range& other) const
385  {
386  GKO_ASSERT(detail::equal_dimensions(*this, other));
387  accessor_.copy_from(other.get_accessor());
388  return *this;
389  }
390 
391  range(const range& other) = default;
392 
400  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
401  {
402  return accessor_.length(dimension);
403  }
404 
412  GKO_ATTRIBUTES constexpr const accessor* operator->() const noexcept
413  {
414  return &accessor_;
415  }
416 
422  GKO_ATTRIBUTES constexpr const accessor& get_accessor() const noexcept
423  {
424  return accessor_;
425  }
426 
427 private:
428  accessor accessor_;
429 };
430 
431 
432 // implementation of range operations follows
433 // (you probably should not have to look at this unless you're interested in the
434 // gory details)
435 
436 
437 namespace detail {
438 
439 
440 enum class operation_kind { range_by_range, scalar_by_range, range_by_scalar };
441 
442 
443 template <typename Accessor, typename Operation>
444 struct implement_unary_operation {
445  using accessor = Accessor;
446  static constexpr size_type dimensionality = accessor::dimensionality;
447 
448  GKO_ATTRIBUTES constexpr explicit implement_unary_operation(
449  const Accessor& operand)
450  : operand{operand}
451  {}
452 
453  template <typename... DimensionTypes>
454  GKO_ATTRIBUTES constexpr auto operator()(
455  const DimensionTypes&... dimensions) const
456  -> decltype(Operation::evaluate(std::declval<accessor>(),
457  dimensions...))
458  {
459  return Operation::evaluate(operand, dimensions...);
460  }
461 
462  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
463  {
464  return operand.length(dimension);
465  }
466 
467  template <typename OtherAccessor>
468  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
469 
470  const accessor operand;
471 };
472 
473 
474 template <operation_kind Kind, typename FirstOperand, typename SecondOperand,
475  typename Operation>
476 struct implement_binary_operation {};
477 
478 template <typename FirstAccessor, typename SecondAccessor, typename Operation>
479 struct implement_binary_operation<operation_kind::range_by_range, FirstAccessor,
480  SecondAccessor, Operation> {
481  using first_accessor = FirstAccessor;
482  using second_accessor = SecondAccessor;
483  static_assert(first_accessor::dimensionality ==
484  second_accessor::dimensionality,
485  "Both ranges need to have the same number of dimensions");
486  static constexpr size_type dimensionality = first_accessor::dimensionality;
487 
488  GKO_ATTRIBUTES explicit implement_binary_operation(
489  const FirstAccessor& first, const SecondAccessor& second)
490  : first{first}, second{second}
491  {
492  GKO_ASSERT(gko::detail::equal_dimensions(first, second));
493  }
494 
495  template <typename... DimensionTypes>
496  GKO_ATTRIBUTES constexpr auto operator()(
497  const DimensionTypes&... dimensions) const
498  -> decltype(Operation::evaluate_range_by_range(
499  std::declval<first_accessor>(), std::declval<second_accessor>(),
500  dimensions...))
501  {
502  return Operation::evaluate_range_by_range(first, second, dimensions...);
503  }
504 
505  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
506  {
507  return first.length(dimension);
508  }
509 
510  template <typename OtherAccessor>
511  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
512 
513  const first_accessor first;
514  const second_accessor second;
515 };
516 
517 template <typename FirstOperand, typename SecondAccessor, typename Operation>
518 struct implement_binary_operation<operation_kind::scalar_by_range, FirstOperand,
519  SecondAccessor, Operation> {
520  using second_accessor = SecondAccessor;
521  static constexpr size_type dimensionality = second_accessor::dimensionality;
522 
523  GKO_ATTRIBUTES constexpr explicit implement_binary_operation(
524  const FirstOperand& first, const SecondAccessor& second)
525  : first{first}, second{second}
526  {}
527 
528  template <typename... DimensionTypes>
529  GKO_ATTRIBUTES constexpr auto operator()(
530  const DimensionTypes&... dimensions) const
531  -> decltype(Operation::evaluate_scalar_by_range(
532  std::declval<FirstOperand>(), std::declval<second_accessor>(),
533  dimensions...))
534  {
535  return Operation::evaluate_scalar_by_range(first, second,
536  dimensions...);
537  }
538 
539  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
540  {
541  return second.length(dimension);
542  }
543 
544  template <typename OtherAccessor>
545  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
546 
547  const FirstOperand first;
548  const second_accessor second;
549 };
550 
551 template <typename FirstAccessor, typename SecondOperand, typename Operation>
552 struct implement_binary_operation<operation_kind::range_by_scalar,
553  FirstAccessor, SecondOperand, Operation> {
554  using first_accessor = FirstAccessor;
555  static constexpr size_type dimensionality = first_accessor::dimensionality;
556 
557  GKO_ATTRIBUTES constexpr explicit implement_binary_operation(
558  const FirstAccessor& first, const SecondOperand& second)
559  : first{first}, second{second}
560  {}
561 
562  template <typename... DimensionTypes>
563  GKO_ATTRIBUTES constexpr auto operator()(
564  const DimensionTypes&... dimensions) const
565  -> decltype(Operation::evaluate_range_by_scalar(
566  std::declval<first_accessor>(), std::declval<SecondOperand>(),
567  dimensions...))
568  {
569  return Operation::evaluate_range_by_scalar(first, second,
570  dimensions...);
571  }
572 
573  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
574  {
575  return first.length(dimension);
576  }
577 
578  template <typename OtherAccessor>
579  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
580 
581  const first_accessor first;
582  const SecondOperand second;
583 };
584 
585 
586 } // namespace detail
587 
588 #define GKO_DEPRECATED_UNARY_RANGE_OPERATION(_operation_deprecated_name, \
589  _operation_name) \
590  namespace accessor { \
591  template <typename Operand> \
592  struct GKO_DEPRECATED("Please use " #_operation_name) \
593  _operation_deprecated_name : _operation_name<Operand> {}; \
594  } \
595  static_assert(true, \
596  "This assert is used to counter the false positive extra " \
597  "semi-colon warnings")
598 
599 
600 #define GKO_ENABLE_UNARY_RANGE_OPERATION(_operation_name, _operator_name, \
601  _operator) \
602  namespace accessor { \
603  template <typename Operand> \
604  struct _operation_name \
605  : ::gko::detail::implement_unary_operation<Operand, \
606  ::gko::_operator> { \
607  using ::gko::detail::implement_unary_operation< \
608  Operand, ::gko::_operator>::implement_unary_operation; \
609  }; \
610  } \
611  GKO_BIND_UNARY_RANGE_OPERATION_TO_OPERATOR(_operation_name, _operator_name)
612 
613 
614 #define GKO_BIND_UNARY_RANGE_OPERATION_TO_OPERATOR(_operation_name, \
615  _operator_name) \
616  template <typename Accessor> \
617  GKO_ATTRIBUTES constexpr GKO_INLINE \
618  range<accessor::_operation_name<Accessor>> \
619  _operator_name(const range<Accessor>& operand) \
620  { \
621  return range<accessor::_operation_name<Accessor>>( \
622  operand.get_accessor()); \
623  } \
624  static_assert(true, \
625  "This assert is used to counter the false positive extra " \
626  "semi-colon warnings")
627 
628 
629 #define GKO_DEFINE_SIMPLE_UNARY_OPERATION(_name, ...) \
630  struct _name { \
631  private: \
632  template <typename Operand> \
633  GKO_ATTRIBUTES static constexpr auto simple_evaluate_impl( \
634  const Operand& operand) -> decltype(__VA_ARGS__) \
635  { \
636  return __VA_ARGS__; \
637  } \
638  \
639  public: \
640  template <typename AccessorType, typename... DimensionTypes> \
641  GKO_ATTRIBUTES static constexpr auto evaluate( \
642  const AccessorType& accessor, const DimensionTypes&... dimensions) \
643  -> decltype(simple_evaluate_impl(accessor(dimensions...))) \
644  { \
645  return simple_evaluate_impl(accessor(dimensions...)); \
646  } \
647  }
648 
649 
650 namespace accessor {
651 namespace detail {
652 
653 
654 // unary arithmetic
655 GKO_DEFINE_SIMPLE_UNARY_OPERATION(unary_plus, +operand);
656 GKO_DEFINE_SIMPLE_UNARY_OPERATION(unary_minus, -operand);
657 
658 // unary logical
659 GKO_DEFINE_SIMPLE_UNARY_OPERATION(logical_not, !operand);
660 
661 // unary bitwise
662 GKO_DEFINE_SIMPLE_UNARY_OPERATION(bitwise_not, ~(operand));
663 
664 // common functions
665 GKO_DEFINE_SIMPLE_UNARY_OPERATION(zero_operation, zero(operand));
666 GKO_DEFINE_SIMPLE_UNARY_OPERATION(one_operation, one(operand));
667 GKO_DEFINE_SIMPLE_UNARY_OPERATION(abs_operation, abs(operand));
668 GKO_DEFINE_SIMPLE_UNARY_OPERATION(real_operation, real(operand));
669 GKO_DEFINE_SIMPLE_UNARY_OPERATION(imag_operation, imag(operand));
670 GKO_DEFINE_SIMPLE_UNARY_OPERATION(conj_operation, conj(operand));
671 GKO_DEFINE_SIMPLE_UNARY_OPERATION(squared_norm_operation,
672  squared_norm(operand));
673 
674 } // namespace detail
675 } // namespace accessor
676 
677 
678 // unary arithmetic
679 GKO_ENABLE_UNARY_RANGE_OPERATION(unary_plus, operator+,
680  accessor::detail::unary_plus);
681 GKO_ENABLE_UNARY_RANGE_OPERATION(unary_minus, operator-,
682  accessor::detail::unary_minus);
683 
684 // unary logical
685 GKO_ENABLE_UNARY_RANGE_OPERATION(logical_not, operator!,
686  accessor::detail::logical_not);
687 
688 // unary bitwise
689 GKO_ENABLE_UNARY_RANGE_OPERATION(bitwise_not, operator~,
690  accessor::detail::bitwise_not);
691 
692 // common unary functions
693 
694 GKO_ENABLE_UNARY_RANGE_OPERATION(zero_operation, zero,
695  accessor::detail::zero_operation);
696 GKO_ENABLE_UNARY_RANGE_OPERATION(one_operation, one,
697  accessor::detail::one_operation);
698 GKO_ENABLE_UNARY_RANGE_OPERATION(abs_operation, abs,
699  accessor::detail::abs_operation);
700 GKO_ENABLE_UNARY_RANGE_OPERATION(real_operation, real,
701  accessor::detail::real_operation);
702 GKO_ENABLE_UNARY_RANGE_OPERATION(imag_operation, imag,
703  accessor::detail::imag_operation);
704 GKO_ENABLE_UNARY_RANGE_OPERATION(conj_operation, conj,
705  accessor::detail::conj_operation);
706 GKO_ENABLE_UNARY_RANGE_OPERATION(squared_norm_operation, squared_norm,
707  accessor::detail::squared_norm_operation);
708 
709 GKO_DEPRECATED_UNARY_RANGE_OPERATION(one_operaton, one_operation);
710 GKO_DEPRECATED_UNARY_RANGE_OPERATION(abs_operaton, abs_operation);
711 GKO_DEPRECATED_UNARY_RANGE_OPERATION(real_operaton, real_operation);
712 GKO_DEPRECATED_UNARY_RANGE_OPERATION(imag_operaton, imag_operation);
713 GKO_DEPRECATED_UNARY_RANGE_OPERATION(conj_operaton, conj_operation);
714 GKO_DEPRECATED_UNARY_RANGE_OPERATION(squared_norm_operaton,
715  squared_norm_operation);
716 
717 namespace accessor {
718 
719 
720 template <typename Accessor>
721 struct transpose_operation {
722  using accessor = Accessor;
723  static constexpr size_type dimensionality = accessor::dimensionality;
724 
725  GKO_ATTRIBUTES constexpr explicit transpose_operation(
726  const Accessor& operand)
727  : operand{operand}
728  {}
729 
730  template <typename FirstDimensionType, typename SecondDimensionType,
731  typename... DimensionTypes>
732  GKO_ATTRIBUTES constexpr auto operator()(
733  const FirstDimensionType& first_dim,
734  const SecondDimensionType& second_dim,
735  const DimensionTypes&... dims) const
736  -> decltype(std::declval<accessor>()(second_dim, first_dim, dims...))
737  {
738  return operand(second_dim, first_dim, dims...);
739  }
740 
741  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
742  {
743  return dimension < 2 ? operand.length(dimension ^ 1)
744  : operand.length(dimension);
745  }
746 
747  template <typename OtherAccessor>
748  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
749 
750  const accessor operand;
751 };
752 
753 
754 } // namespace accessor
755 
756 
757 GKO_BIND_UNARY_RANGE_OPERATION_TO_OPERATOR(transpose_operation, transpose);
758 
759 
760 #undef GKO_DEPRECATED_UNARY_RANGE_OPERATION
761 #undef GKO_DEFINE_SIMPLE_UNARY_OPERATION
762 #undef GKO_ENABLE_UNARY_RANGE_OPERATION
763 
764 
765 #define GKO_ENABLE_BINARY_RANGE_OPERATION(_operation_name, _operator_name, \
766  _operator) \
767  namespace accessor { \
768  template <::gko::detail::operation_kind Kind, typename FirstOperand, \
769  typename SecondOperand> \
770  struct _operation_name \
771  : ::gko::detail::implement_binary_operation< \
772  Kind, FirstOperand, SecondOperand, ::gko::_operator> { \
773  using ::gko::detail::implement_binary_operation< \
774  Kind, FirstOperand, SecondOperand, \
775  ::gko::_operator>::implement_binary_operation; \
776  }; \
777  } \
778  GKO_BIND_RANGE_OPERATION_TO_OPERATOR(_operation_name, _operator_name); \
779  static_assert(true, \
780  "This assert is used to counter the false positive extra " \
781  "semi-colon warnings")
782 
783 
784 #define GKO_BIND_RANGE_OPERATION_TO_OPERATOR(_operation_name, _operator_name) \
785  template <typename Accessor> \
786  GKO_ATTRIBUTES constexpr GKO_INLINE range<accessor::_operation_name< \
787  ::gko::detail::operation_kind::range_by_range, Accessor, Accessor>> \
788  _operator_name(const range<Accessor>& first, \
789  const range<Accessor>& second) \
790  { \
791  return range<accessor::_operation_name< \
792  ::gko::detail::operation_kind::range_by_range, Accessor, \
793  Accessor>>(first.get_accessor(), second.get_accessor()); \
794  } \
795  \
796  template <typename FirstAccessor, typename SecondAccessor> \
797  GKO_ATTRIBUTES constexpr GKO_INLINE range<accessor::_operation_name< \
798  ::gko::detail::operation_kind::range_by_range, FirstAccessor, \
799  SecondAccessor>> \
800  _operator_name(const range<FirstAccessor>& first, \
801  const range<SecondAccessor>& second) \
802  { \
803  return range<accessor::_operation_name< \
804  ::gko::detail::operation_kind::range_by_range, FirstAccessor, \
805  SecondAccessor>>(first.get_accessor(), second.get_accessor()); \
806  } \
807  \
808  template <typename FirstAccessor, typename SecondOperand> \
809  GKO_ATTRIBUTES constexpr GKO_INLINE range<accessor::_operation_name< \
810  ::gko::detail::operation_kind::range_by_scalar, FirstAccessor, \
811  SecondOperand>> \
812  _operator_name(const range<FirstAccessor>& first, \
813  const SecondOperand& second) \
814  { \
815  return range<accessor::_operation_name< \
816  ::gko::detail::operation_kind::range_by_scalar, FirstAccessor, \
817  SecondOperand>>(first.get_accessor(), second); \
818  } \
819  \
820  template <typename FirstOperand, typename SecondAccessor> \
821  GKO_ATTRIBUTES constexpr GKO_INLINE range<accessor::_operation_name< \
822  ::gko::detail::operation_kind::scalar_by_range, FirstOperand, \
823  SecondAccessor>> \
824  _operator_name(const FirstOperand& first, \
825  const range<SecondAccessor>& second) \
826  { \
827  return range<accessor::_operation_name< \
828  ::gko::detail::operation_kind::scalar_by_range, FirstOperand, \
829  SecondAccessor>>(first, second.get_accessor()); \
830  } \
831  static_assert(true, \
832  "This assert is used to counter the false positive extra " \
833  "semi-colon warnings")
834 
835 
836 #define GKO_DEPRECATED_SIMPLE_BINARY_OPERATION(_deprecated_name, _name) \
837  struct GKO_DEPRECATED("Please use " #_name) _deprecated_name : _name {}
838 
839 #define GKO_DEFINE_SIMPLE_BINARY_OPERATION(_name, ...) \
840  struct _name { \
841  private: \
842  template <typename FirstOperand, typename SecondOperand> \
843  GKO_ATTRIBUTES constexpr static auto simple_evaluate_impl( \
844  const FirstOperand& first, const SecondOperand& second) \
845  -> decltype(__VA_ARGS__) \
846  { \
847  return __VA_ARGS__; \
848  } \
849  \
850  public: \
851  template <typename FirstAccessor, typename SecondAccessor, \
852  typename... DimensionTypes> \
853  GKO_ATTRIBUTES static constexpr auto evaluate_range_by_range( \
854  const FirstAccessor& first, const SecondAccessor& second, \
855  const DimensionTypes&... dims) \
856  -> decltype(simple_evaluate_impl(first(dims...), second(dims...))) \
857  { \
858  return simple_evaluate_impl(first(dims...), second(dims...)); \
859  } \
860  \
861  template <typename FirstOperand, typename SecondAccessor, \
862  typename... DimensionTypes> \
863  GKO_ATTRIBUTES static constexpr auto evaluate_scalar_by_range( \
864  const FirstOperand& first, const SecondAccessor& second, \
865  const DimensionTypes&... dims) \
866  -> decltype(simple_evaluate_impl(first, second(dims...))) \
867  { \
868  return simple_evaluate_impl(first, second(dims...)); \
869  } \
870  \
871  template <typename FirstAccessor, typename SecondOperand, \
872  typename... DimensionTypes> \
873  GKO_ATTRIBUTES static constexpr auto evaluate_range_by_scalar( \
874  const FirstAccessor& first, const SecondOperand& second, \
875  const DimensionTypes&... dims) \
876  -> decltype(simple_evaluate_impl(first(dims...), second)) \
877  { \
878  return simple_evaluate_impl(first(dims...), second); \
879  } \
880  }
881 
882 
883 namespace accessor {
884 namespace detail {
885 
886 
887 // binary arithmetic
888 GKO_DEFINE_SIMPLE_BINARY_OPERATION(add, first + second);
889 GKO_DEFINE_SIMPLE_BINARY_OPERATION(sub, first - second);
890 GKO_DEFINE_SIMPLE_BINARY_OPERATION(mul, first* second);
891 GKO_DEFINE_SIMPLE_BINARY_OPERATION(div, first / second);
892 GKO_DEFINE_SIMPLE_BINARY_OPERATION(mod, first % second);
893 
894 // relational
895 GKO_DEFINE_SIMPLE_BINARY_OPERATION(less, first < second);
896 GKO_DEFINE_SIMPLE_BINARY_OPERATION(greater, first > second);
897 GKO_DEFINE_SIMPLE_BINARY_OPERATION(less_or_equal, first <= second);
898 GKO_DEFINE_SIMPLE_BINARY_OPERATION(greater_or_equal, first >= second);
899 GKO_DEFINE_SIMPLE_BINARY_OPERATION(equal, first == second);
900 GKO_DEFINE_SIMPLE_BINARY_OPERATION(not_equal, first != second);
901 
902 // binary logical
903 GKO_DEFINE_SIMPLE_BINARY_OPERATION(logical_or, first || second);
904 GKO_DEFINE_SIMPLE_BINARY_OPERATION(logical_and, first&& second);
905 
906 // binary bitwise
907 GKO_DEFINE_SIMPLE_BINARY_OPERATION(bitwise_or, first | second);
908 GKO_DEFINE_SIMPLE_BINARY_OPERATION(bitwise_and, first& second);
909 GKO_DEFINE_SIMPLE_BINARY_OPERATION(bitwise_xor, first ^ second);
910 GKO_DEFINE_SIMPLE_BINARY_OPERATION(left_shift, first << second);
911 GKO_DEFINE_SIMPLE_BINARY_OPERATION(right_shift, first >> second);
912 
913 // common binary functions
914 GKO_DEFINE_SIMPLE_BINARY_OPERATION(max_operation, max(first, second));
915 GKO_DEFINE_SIMPLE_BINARY_OPERATION(min_operation, min(first, second));
916 
917 GKO_DEPRECATED_SIMPLE_BINARY_OPERATION(max_operaton, max_operation);
918 GKO_DEPRECATED_SIMPLE_BINARY_OPERATION(min_operaton, min_operation);
919 } // namespace detail
920 } // namespace accessor
921 
922 
923 // binary arithmetic
924 GKO_ENABLE_BINARY_RANGE_OPERATION(add, operator+, accessor::detail::add);
925 GKO_ENABLE_BINARY_RANGE_OPERATION(sub, operator-, accessor::detail::sub);
926 GKO_ENABLE_BINARY_RANGE_OPERATION(mul, operator*, accessor::detail::mul);
927 GKO_ENABLE_BINARY_RANGE_OPERATION(div, operator/, accessor::detail::div);
928 GKO_ENABLE_BINARY_RANGE_OPERATION(mod, operator%, accessor::detail::mod);
929 
930 // relational
931 GKO_ENABLE_BINARY_RANGE_OPERATION(less, operator<, accessor::detail::less);
932 GKO_ENABLE_BINARY_RANGE_OPERATION(greater, operator>,
933  accessor::detail::greater);
934 GKO_ENABLE_BINARY_RANGE_OPERATION(less_or_equal, operator<=,
935  accessor::detail::less_or_equal);
936 GKO_ENABLE_BINARY_RANGE_OPERATION(greater_or_equal, operator>=,
937  accessor::detail::greater_or_equal);
938 GKO_ENABLE_BINARY_RANGE_OPERATION(equal, operator==, accessor::detail::equal);
939 GKO_ENABLE_BINARY_RANGE_OPERATION(not_equal, operator!=,
940  accessor::detail::not_equal);
941 
942 // binary logical
943 GKO_ENABLE_BINARY_RANGE_OPERATION(logical_or, operator||,
944  accessor::detail::logical_or);
945 GKO_ENABLE_BINARY_RANGE_OPERATION(logical_and, operator&&,
946  accessor::detail::logical_and);
947 
948 // binary bitwise
949 GKO_ENABLE_BINARY_RANGE_OPERATION(bitwise_or, operator|,
950  accessor::detail::bitwise_or);
951 GKO_ENABLE_BINARY_RANGE_OPERATION(bitwise_and, operator&,
952  accessor::detail::bitwise_and);
953 GKO_ENABLE_BINARY_RANGE_OPERATION(bitwise_xor, operator^,
954  accessor::detail::bitwise_xor);
955 GKO_ENABLE_BINARY_RANGE_OPERATION(left_shift, operator<<,
956  accessor::detail::left_shift);
957 GKO_ENABLE_BINARY_RANGE_OPERATION(right_shift, operator>>,
958  accessor::detail::right_shift);
959 
960 // common binary functions
961 GKO_ENABLE_BINARY_RANGE_OPERATION(max_operation, max,
962  accessor::detail::max_operation);
963 GKO_ENABLE_BINARY_RANGE_OPERATION(min_operation, min,
964  accessor::detail::min_operation);
965 
966 
967 // special binary range functions
968 namespace accessor {
969 
970 
971 template <gko::detail::operation_kind Kind, typename FirstAccessor,
972  typename SecondAccessor>
973 struct mmul_operation {
974  static_assert(Kind == gko::detail::operation_kind::range_by_range,
975  "Matrix multiplication expects both operands to be ranges");
976  using first_accessor = FirstAccessor;
977  using second_accessor = SecondAccessor;
978  static_assert(first_accessor::dimensionality ==
979  second_accessor::dimensionality,
980  "Both ranges need to have the same number of dimensions");
981  static constexpr size_type dimensionality = first_accessor::dimensionality;
982 
983  GKO_ATTRIBUTES explicit mmul_operation(const FirstAccessor& first,
984  const SecondAccessor& second)
985  : first{first}, second{second}
986  {
987  GKO_ASSERT(first.length(1) == second.length(0));
988  GKO_ASSERT(gko::detail::equal_dimensions<2>(first, second));
989  }
990 
991  template <typename FirstDimension, typename SecondDimension,
992  typename... DimensionTypes>
993  GKO_ATTRIBUTES auto operator()(const FirstDimension& row,
994  const SecondDimension& col,
995  const DimensionTypes&... rest) const
996  -> decltype(std::declval<FirstAccessor>()(row, 0, rest...) *
997  std::declval<SecondAccessor>()(0, col, rest...) +
998  std::declval<FirstAccessor>()(row, 1, rest...) *
999  std::declval<SecondAccessor>()(1, col, rest...))
1000  {
1001  using result_type =
1002  decltype(first(row, 0, rest...) * second(0, col, rest...) +
1003  first(row, 1, rest...) * second(1, col, rest...));
1004  GKO_ASSERT(first.length(1) == second.length(0));
1005  auto result = zero<result_type>();
1006  const auto size = first.length(1);
1007  for (auto i = zero(size); i < size; ++i) {
1008  result += first(row, i, rest...) * second(i, col, rest...);
1009  }
1010  return result;
1011  }
1012 
1013  GKO_ATTRIBUTES constexpr size_type length(size_type dimension) const
1014  {
1015  return dimension == 1 ? second.length(1) : first.length(dimension);
1016  }
1017 
1018  template <typename OtherAccessor>
1019  GKO_ATTRIBUTES void copy_from(const OtherAccessor& other) const = delete;
1020 
1021  const first_accessor first;
1022  const second_accessor second;
1023 };
1024 
1025 
1026 } // namespace accessor
1027 
1028 
1029 GKO_BIND_RANGE_OPERATION_TO_OPERATOR(mmul_operation, mmul);
1030 
1031 
1032 #undef GKO_DEFINE_SIMPLE_BINARY_OPERATION
1033 #undef GKO_ENABLE_BINARY_RANGE_OPERATION
1034 
1035 
1036 } // namespace gko
1037 
1038 
1039 #endif // GKO_PUBLIC_CORE_BASE_RANGE_HPP_
gko::accessor::squared_norm_operation
Definition: range.hpp:707
gko::accessor::sub
Definition: range.hpp:925
gko::accessor::right_shift
Definition: range.hpp:958
gko::accessor::greater_or_equal
Definition: range.hpp:937
gko::span::end
const size_type end
End of the span.
Definition: range.hpp:90
gko::max
constexpr T max(const T &x, const T &y)
Returns the larger of the arguments.
Definition: math.hpp:716
gko::accessor::imag_operation
Definition: range.hpp:703
gko::accessor::unary_minus
Definition: range.hpp:682
gko::abs
constexpr std::enable_if_t<!is_complex_s< T >::value, T > abs(const T &x)
Returns the absolute value of the object.
Definition: math.hpp:945
gko::range::range
constexpr range(AccessorParams &&... params)
Creates a new range.
Definition: range.hpp:328
gko::range::~range
~range()=default
Use the default destructor.
gko::accessor::abs_operation
Definition: range.hpp:699
gko::accessor::mul
Definition: range.hpp:926
gko::accessor::unary_plus
Definition: range.hpp:680
gko::size_type
std::size_t size_type
Integral type used for allocation quantities.
Definition: types.hpp:86
gko::accessor::bitwise_not
Definition: range.hpp:690
gko::accessor::max_operation
Definition: range.hpp:962
gko::accessor::one_operaton
Definition: range.hpp:709
gko::span::is_valid
constexpr bool is_valid() const
Checks if a span is valid.
Definition: range.hpp:73
gko::accessor::less_or_equal
Definition: range.hpp:935
gko::span::span
constexpr span(size_type point) noexcept
Creates a span representing a point point.
Definition: range.hpp:54
gko::span::span
constexpr span(size_type begin, size_type end) noexcept
Creates a span.
Definition: range.hpp:64
gko::squared_norm
constexpr auto squared_norm(const T &x) -> decltype(real(conj(x) *x))
Returns the squared norm of the object.
Definition: math.hpp:928
gko::span::begin
const size_type begin
Beginning of the span.
Definition: range.hpp:85
gko::span::length
constexpr size_type length() const
Returns the length of a span.
Definition: range.hpp:80
gko::accessor::div
Definition: range.hpp:927
gko::accessor::logical_or
Definition: range.hpp:944
gko::range::operator->
constexpr const accessor * operator->() const noexcept
Returns a pointer to the accessor.
Definition: range.hpp:412
gko::range
A range is a multidimensional view of the memory.
Definition: range.hpp:297
gko
The Ginkgo namespace.
Definition: abstract_factory.hpp:20
gko::accessor::one_operation
Definition: range.hpp:697
gko::range::get_accessor
constexpr const accessor & get_accessor() const noexcept
`Returns a reference to the accessor.
Definition: range.hpp:422
gko::accessor::min_operation
Definition: range.hpp:964
gko::accessor::bitwise_and
Definition: range.hpp:952
gko::accessor::add
Definition: range.hpp:924
gko::accessor::squared_norm_operaton
Definition: range.hpp:715
gko::span
A span is a lightweight structure used to create sub-ranges from other ranges.
Definition: range.hpp:46
gko::accessor::zero_operation
Definition: range.hpp:695
gko::accessor::real_operaton
Definition: range.hpp:711
gko::accessor::conj_operaton
Definition: range.hpp:713
gko::accessor::bitwise_xor
Definition: range.hpp:954
gko::conj
constexpr auto conj(const T &x)
Returns the conjugate of an object.
Definition: math.hpp:914
gko::accessor::conj_operation
Definition: range.hpp:705
gko::accessor::mod
Definition: range.hpp:928
gko::transpose
batch_dim< 2, DimensionType > transpose(const batch_dim< 2, DimensionType > &input)
Returns a batch_dim object with its dimensions swapped for batched operators.
Definition: batch_dim.hpp:119
gko::accessor::not_equal
Definition: range.hpp:940
gko::range::operator()
constexpr auto operator()(DimensionTypes &&... dimensions) const -> decltype(std::declval< accessor >()(std::forward< DimensionTypes >(dimensions)...))
Returns a value (or a sub-range) with the specified indexes.
Definition: range.hpp:345
gko::accessor::equal
Definition: range.hpp:938
gko::accessor::left_shift
Definition: range.hpp:956
gko::accessor::real_operation
Definition: range.hpp:701
gko::range::length
constexpr size_type length(size_type dimension) const
Returns the length of the specified dimension of the range.
Definition: range.hpp:400
gko::range::dimensionality
static constexpr size_type dimensionality
The number of dimensions of the range.
Definition: range.hpp:307
gko::range::accessor
Accessor accessor
The type of the underlying accessor.
Definition: range.hpp:302
gko::accessor::mmul_operation
Definition: range.hpp:973
gko::accessor::transpose_operation
Definition: range.hpp:721
gko::accessor::greater
Definition: range.hpp:933
gko::accessor::bitwise_or
Definition: range.hpp:950
gko::accessor::imag_operaton
Definition: range.hpp:712
gko::min
constexpr T min(const T &x, const T &y)
Returns the smaller of the arguments.
Definition: math.hpp:734
gko::accessor::logical_and
Definition: range.hpp:946
gko::range::operator=
const range & operator=(const range &other) const
Assigns another range to this range.
Definition: range.hpp:384
gko::accessor::abs_operaton
Definition: range.hpp:710
gko::range::operator=
const range & operator=(const range< OtherAccessor > &other) const
Definition: range.hpp:363
gko::real
constexpr auto real(const T &x)
Returns the real part of the object.
Definition: math.hpp:884
gko::accessor::less
Definition: range.hpp:931
gko::zero
constexpr T zero()
Returns the additive identity for T.
Definition: math.hpp:624
gko::accessor::logical_not
Definition: range.hpp:686
gko::one
constexpr T one()
Returns the multiplicative identity for T.
Definition: math.hpp:652
gko::imag
constexpr auto imag(const T &x)
Returns the imaginary part of the object.
Definition: math.hpp:900
Generated by   doxygen 1.8.16