find_first_of¶
Header: <Kokkos_StdAlgorithms.hpp>
Searches a range or a View for any of the elements in a target range or View.
Warning
This is currently inside the Kokkos::Experimental namespace.
template <class ExecutionSpace, class IteratorType1, class IteratorType2>
IteratorType1 find_first_of(const ExecutionSpace& exespace, (1)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last);
template <class ExecutionSpace, class IteratorType1, class IteratorType2>
IteratorType1 find_first_of(const std::string& label, const ExecutionSpace& exespace, (2)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last);
template <class ExecutionSpace, class DataType1, class... Properties1,
class DataType2, class... Properties2>
auto find_first_of(const ExecutionSpace& exespace, (3)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view);
template <class ExecutionSpace, class DataType1, class... Properties1,
class DataType2, class... Properties2>
auto find_first_of(const std::string& label, const ExecutionSpace& exespace, (4)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view);
// overload set 2: binary predicate passed
template <class ExecutionSpace, class IteratorType1, class IteratorType2,
class BinaryPredicateType>
IteratorType1 find_first_of(const ExecutionSpace& exespace, (5)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last,
const BinaryPredicateType& pred);
template <class ExecutionSpace, class IteratorType1, class IteratorType2,
class BinaryPredicateType>
IteratorType1 find_first_of(const std::string& label, const ExecutionSpace& exespace, (6)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last,
const BinaryPredicateType& pred);
template <class ExecutionSpace, class DataType1, class... Properties1,
class DataType2, class... Properties2, class BinaryPredicateType>
auto find_first_of(const ExecutionSpace& exespace, (7)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view,
const BinaryPredicateType& pred);
template <class ExecutionSpace, class DataType1, class... Properties1,
class DataType2, class... Properties2, class BinaryPredicateType>
auto find_first_of(const std::string& label, const ExecutionSpace& exespace, (8)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view,
const BinaryPredicateType& pred);
Overload set accepting a team handle¶
Added in version 4.2.
template <class TeamHandleType, class IteratorType1, class IteratorType2>
KOKKOS_FUNCTION
IteratorType1 find_first_of(const TeamHandleType& teamHandle, (9)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last);
template <class TeamHandleType, class DataType1, class... Properties1,
class DataType2, class... Properties2>
KOKKOS_FUNCTION
auto find_first_of(const TeamHandleType& teamHandle, (10)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view);
// overload set 2: binary predicate passed
template <class TeamHandleType, class IteratorType1, class IteratorType2,
class BinaryPredicateType>
KOKKOS_FUNCTION
IteratorType1 find_first_of(const TeamHandleType& teamHandle, (11)
IteratorType1 first, IteratorType1 last,
IteratorType2 s_first, IteratorType2 s_last,
const BinaryPredicateType& pred);
template <class TeamHandleType, class DataType1, class... Properties1,
class DataType2, class... Properties2, class BinaryPredicateType>
KOKKOS_FUNCTION
auto find_first_of(const TeamHandleType& teamHandle, (12)
const ::Kokkos::View<DataType1, Properties1...>& view,
const ::Kokkos::View<DataType2, Properties2...>& s_view,
const BinaryPredicateType& pred);
Detailed Description¶
1,2,5,6,9,10: searches the range [first, last) for any of the elements in the range [s_first, s_last) comparing elements via operator == or via pred
3,4,7,8,11,12: searches view for any of the elements in s_view comparing elements via operator == or via pred
exespace: execution space instance
teamHandle: team handle instance given inside a parallel region when using a TeamPolicy
label: string forwarded to internal parallel kernels for debugging purposes
1,5: The default string is “Kokkos::find_first_of_iterator_api_default”.
3,7: The default string is “”Kokkos::find_first_of_view_api_default”.
NOTE: overloads accepting a team handle do not use a label internally
first, last: range of elements to search in
must be random access iterators, e.g., returned from Kokkos::Experimental::(c)begin/(c)end
must represent a valid range, i.e., last >= first
must be accessible from exespace or from the execution space associated with the team handle
s_first, s_last: range of elements that you want to search for
same requirements as first, last
view, s_view: views to search in and for, respectively
must be rank-1, and have LayoutLeft, LayoutRight, or LayoutStride
must be accessible from exespace or from the execution space associated with the team handle
pred: binary functor returning true if two arguments should be considered “equal”.
pred(a,b) must be valid to be called from the execution space passed, or the execution space associated with the team handle, and convertible to bool for every pair of arguments a,b of type ValueType1 and ValueType2, respectively, where ValueType1 and ValueType{1,2} are the value types of IteratorType{1,2} or (s_)view, and must not modify a,b.
must conform to:
template <class ValueType1, class ValueType2 = ValueType1>
struct IsEqualFunctor {
KOKKOS_INLINE_FUNCTION
bool operator()(const ValueType1& a, const ValueType2& b) const {
return (a == b);
}
};
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