/* Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */

#pragma once

#include "paddle/phi/core/distributed/auto_parallel/dist_meta_tensor.h"
#include "paddle/phi/core/distributed/type_defs.h"

namespace phi {
namespace distributed {

SpmdInfo LayerNormInferSpmd(const DistMetaTensor& x,
                            const DistMetaTensor& scale,
                            const DistMetaTensor& bias,
                            float epsilon,
                            int begin_norm_axis);

SpmdInfo LayerNormGradInferSpmd(const DistMetaTensor& x,
                                const DistMetaTensor& scale,
                                const DistMetaTensor& bias,
                                const DistMetaTensor& mean,
                                const DistMetaTensor& variance,
                                const DistMetaTensor out_grad,
                                float epsilon = 1e-5,
                                int begin_norm_axis = 1);

SpmdInfo LayerNormInferSpmdReverse(const DistMetaTensor& x,
                                   const DistMetaTensor& scale,
                                   const DistMetaTensor& bias,
                                   const DistMetaTensor& out,
                                   const DistMetaTensor& mean,
                                   const DistMetaTensor& variance,
                                   float epsilon,
                                   int begin_norm_axis);

SpmdInfo FastLnInferSpmd(const DistMetaTensor& x,
                         const DistMetaTensor& scale,
                         const DistMetaTensor& bias,
                         float epsilon);

SpmdInfo FastLnGradInferSpmd(const DistMetaTensor& x,
                             const DistMetaTensor& scale,
                             const DistMetaTensor& mean,
                             const DistMetaTensor& invvar,
                             const DistMetaTensor& y_grad,
                             float epsilon);

}  // namespace distributed
}  // namespace phi
