find_if_not¶
Header: <Kokkos_StdAlgorithms.hpp>
Returns an iterator to the first element in a range or a View for which a custom predicate returns false.
Warning
This is currently inside the Kokkos::Experimental namespace.
template <class ExecutionSpace, class InputIterator, class PredicateType>
InputIterator find_if_not(const ExecutionSpace& exespace, (1)
InputIterator first, InputIterator last,
PredicateType pred);
template <class ExecutionSpace, class InputIterator, class PredicateType>
InputIterator find_if_not(const std::string& label, const ExecutionSpace& exespace, (2)
InputIterator first, InputIterator last,
PredicateType pred);
template <class ExecutionSpace, class DataType, class... Properties, class PredicateType>
auto find_if_not(const ExecutionSpace& exespace, (3)
const Kokkos::View<DataType, Properties...>& view,
PredicateType pred);
template <class ExecutionSpace, class DataType, class... Properties, class PredicateType>
auto find_if_not(const std::string& label, const ExecutionSpace& exespace, (4)
const Kokkos::View<DataType, Properties...>& view,
PredicateType pred);
Overload set accepting a team handle¶
Added in version 4.2.
template <class TeamHandleType, class InputIterator, class PredicateType>
KOKKOS_FUNCTION
InputIterator find_if_not(const TeamHandleType& teamHandle, (5)
InputIterator first, InputIterator last,
PredicateType pred);
template <class TeamHandleType, class DataType, class... Properties, class PredicateType>
KOKKOS_FUNCTION
auto find_if_not(const TeamHandleType& teamHandle, (6)
const Kokkos::View<DataType, Properties...>& view,
PredicateType pred);
Parameters and Requirements¶
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
for 1, the default string is: “Kokkos::find_if_not_iterator_api_default”
for 3, the default string is: “Kokkos::find_if_not_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
view: view to search in
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: unary predicate which returns false for the required element;
pred(a) 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 argument a of type (possible const) value_type, where value_type is the value type of InputIterator or view, and must not modify a.
must conform to:
struct Predicate
{
KOKKOS_INLINE_FUNCTION
bool operator()(const /*type needed */ & operand) const { return /* ... */; }
// or, also valid
KOKKOS_INLINE_FUNCTION
bool operator()(/*type needed */ operand) const { return /* ... */; }
};
(1,2,5): InputIterator instance pointing to the first element where the predicate evaluates to false, or last if no such element is found
(3,4,6): iterator to the first element where the predicate evaluates to false, or Kokkos::Experimental::end(view) if no such element is found
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