reshape.hpp

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// SPDX-License-Identifier: BSD-2-Clause
 
#ifndef pRC_CORE_TENSOR_FUNCTIONS_RESHAPE_H
#define pRC_CORE_TENSOR_FUNCTIONS_RESHAPE_H
 
#include <prc/core/functors/view.hpp>
#include <prc/core/tensor/declarations.hpp>
#include <prc/core/tensor/views/reshape.hpp>
 
namespace pRC
{
    template<Size... Ns, class X, IsTensorish R = RemoveReference<X>>
        requires(Sizes<Ns...>::size() == R::size())
    static inline constexpr auto reshape(X &&a)
    {
        if constexpr(IsInvocable<View, X>)
        {
            using V = RemoveReference<decltype(view(forward<X>(a)))>;
            return TensorViews::Reshape<typename R::Type, Sizes<Ns...>, V>(
                view(forward<X>(a)));
        }
        else
        {
            return eval(reshape<Ns...>(a));
        }
    }
}
#endif // pRC_CORE_TENSOR_FUNCTIONS_RESHAPE_H