/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree.
 */

#include <executorch/kernels/portable/cpu/util/functional_util.h>
#include <executorch/runtime/kernel/kernel_includes.h>
#include <executorch/runtime/platform/assert.h>

namespace torch {
namespace executor {
namespace native {

using exec_aten::Tensor;

Tensor&
logical_not_out(KernelRuntimeContext& ctx, const Tensor& in, Tensor& out) {
  (void)ctx;

  // Resize for dynamic shape
  ET_KERNEL_CHECK_MSG(
      ctx,
      resize_tensor(out, in.sizes()) == Error::Ok,
      InvalidArgument,
      out,
      "Failed to resize output tensor.");

  ET_KERNEL_CHECK(
      ctx, tensors_have_same_dim_order(in, out), InvalidArgument, out);

  ET_KERNEL_CHECK(ctx, tensors_have_same_shape(in, out), InvalidArgument, out);

  ET_SWITCH_REAL_TYPES_AND(
      Bool, in.scalar_type(), ctx, "logical_not.out", CTYPE_IN, [&] {
        ET_SWITCH_REAL_TYPES_AND(
            Bool, out.scalar_type(), ctx, "logical_not.out", CTYPE_OUT, [&] {
              apply_unary_map_fn(
                  [](const CTYPE_IN val_in) {
                    return static_cast<CTYPE_OUT>(!static_cast<bool>(val_in));
                  },
                  in.const_data_ptr<CTYPE_IN>(),
                  out.mutable_data_ptr<CTYPE_OUT>(),
                  in.numel());
            });
      });

  return out;
}

} // namespace native
} // namespace executor
} // namespace torch