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83 lines
3.0 KiB
83 lines
3.0 KiB
5 years ago
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/* Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <algorithm>
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#include "paddle/fluid/framework/op_registry.h"
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#include "paddle/fluid/framework/operator.h"
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#include "paddle/fluid/operators/math/math_function.h"
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namespace paddle {
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namespace operators {
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using Tensor = framework::Tensor;
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template <typename DeviceContext, typename T>
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class HistogramKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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const Tensor* input = context.Input<framework::Tensor>("X");
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Tensor* output = context.Output<framework::Tensor>("Out");
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auto& nbins = context.Attr<int64_t>("bins");
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auto& minval = context.Attr<int>("min");
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auto& maxval = context.Attr<int>("max");
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const T* input_data = input->data<T>();
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auto input_numel = input->numel();
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T output_min = static_cast<T>(minval);
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T output_max = static_cast<T>(maxval);
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if (output_min == output_max) {
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output_min = *std::min_element(input_data, input_data + input_numel);
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output_max = *std::max_element(input_data, input_data + input_numel);
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}
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if (output_min == output_max) {
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output_min = output_min - 1;
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output_max = output_max + 1;
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}
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PADDLE_ENFORCE_EQ(
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(std::isinf(static_cast<float>(output_min)) ||
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std::isnan(static_cast<float>(output_max)) ||
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std::isinf(static_cast<float>(output_min)) ||
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std::isnan(static_cast<float>(output_max))),
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false, platform::errors::OutOfRange("range of min, max is not finite"));
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PADDLE_ENFORCE_GE(
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output_max, output_min,
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platform::errors::InvalidArgument(
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"max must be larger or equal to min. If min and max are both zero, "
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"the minimum and maximum values of the data are used. "
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"But received max is %d, min is %d",
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maxval, minval));
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int64_t* out_data = output->mutable_data<int64_t>(context.GetPlace());
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math::SetConstant<DeviceContext, int64_t>()(
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context.template device_context<DeviceContext>(), output,
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static_cast<int64_t>(0));
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for (int64_t i = 0; i < input_numel; i++) {
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if (input_data[i] >= output_min && input_data[i] <= output_max) {
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const int64_t bin = (int64_t)((input_data[i] - output_min) * nbins /
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(output_max - output_min));
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out_data[std::min(bin, nbins - 1)] += 1;
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}
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}
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}
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};
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} // namespace operators
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} // namespace paddle
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