mirror of
https://gitlab.kitware.com/vtk/vtk-m
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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_UnaryPredicates_h
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#define vtk_m_UnaryPredicates_h
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#include <vtkm/TypeTraits.h>
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#include <vtkm/internal/ExportMacros.h>
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namespace vtkm
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{
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/// Predicate that takes a single argument \c x, and returns
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/// True if it is the identity of the Type \p T.
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struct IsZeroInitialized
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{
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template <typename T>
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VTKM_EXEC_CONT bool operator()(const T& x) const
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{
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return (x == vtkm::TypeTraits<T>::ZeroInitialization());
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}
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};
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/// Predicate that takes a single argument \c x, and returns
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/// True if it isn't the identity of the Type \p T.
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struct NotZeroInitialized
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{
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template <typename T>
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VTKM_EXEC_CONT bool operator()(const T& x) const
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{
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return (x != vtkm::TypeTraits<T>::ZeroInitialization());
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}
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};
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/// Predicate that takes a single argument \c x, and returns
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/// True if and only if \c x is \c false.
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/// Note: Requires Type \p T to be convertible to \c bool or implement the
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/// ! operator.
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struct LogicalNot
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{
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template <typename T>
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VTKM_EXEC_CONT bool operator()(const T& x) const
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{
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return !x;
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}
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};
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} // namespace vtkm
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#endif //vtk_m_UnaryPredicates_h
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