/*
 * Copyright (c) 2025, NVIDIA CORPORATION.  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 "tensorrt_llm/common/config.h"
#include "tensorrt_llm/common/cudaUtils.h"
#include "tensorrt_llm/thop/thUtils.h"

#include <ATen/cuda/EmptyTensor.h>
#include <cstdint>
#include <optional>

TRTLLM_NAMESPACE_BEGIN

namespace torch_ext
{
std::tuple<at::Tensor, at::Tensor> fp4_quantize(at::Tensor const& self, std::optional<at::Tensor> const& globalScale,
    int64_t sfVecSize, bool sfUseUE8M0, bool isSfSwizzledLayout);

at::Tensor calculate_nvfp4_global_scale(at::Tensor const& input, std::optional<at::Tensor> const& tokensPerBatch);
} // namespace torch_ext

TRTLLM_NAMESPACE_END