src/main/cuda/headers/cum_sum.cuh

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
#ifndef CUM_SUM_H
#define CUM_SUM_H

using uint = unsigned int;
#include <cuda_runtime.h>

/**
 * Do a cumulative summation over all columns of a matrix
 * @param g_idata   input data stored in device memory (of size n)
 * @param g_odata   output/temporary array stored in device memory (of size n)
 * @param g_tdata temporary accumulated block offsets
 * @param rows      number of rows in input matrix
 * @param cols      number of columns in input matrix
 * @param block_height number of rows processed per block
 */

/**
 * Cumulative sum instantiation for double
 */
extern "C" __global__ void cumulative_sum_up_sweep_d(double *g_idata, double* g_tdata, uint rows,
    uint cols, uint block_height)
{
	SumOp<double> op;
	cumulative_scan_up_sweep<SumOp<double>, double>(g_idata, g_tdata, rows, cols, block_height, op);
}

/**
 * Cumulative sum instantiation for double
 */
extern "C" __global__ void cumulative_sum_up_sweep_f(float *g_idata, float* g_tdata, uint rows,
    uint cols, uint block_height)
{
	SumOp<float> op;
	cumulative_scan_up_sweep<SumOp<float>, float>(g_idata, g_tdata, rows, cols, block_height, op);
}

/**
 * Cumulative sum instantiation for double
 */
extern "C" __global__ void cumulative_sum_down_sweep_d(double *g_idata, double *g_odata, double* g_tdata, uint rows,
    uint cols, uint block_height)
{
	SumOp<double> op;
	cumulative_scan_down_sweep<SumOp<double>, SumNeutralElement<double>, double>(g_idata, g_odata, g_tdata, rows, cols, block_height, op);
}

/**
 * Cumulative sum instantiation for float
 */
extern "C" __global__ void cumulative_sum_down_sweep_f(float *g_idata, float *g_odata, float* g_tdata, uint rows,
    uint cols, uint block_height)
{
	SumOp<float> op;
	cumulative_scan_down_sweep<SumOp<float>, SumNeutralElement<float>, float>(g_idata, g_odata, g_tdata, rows, cols, block_height, op);
}

#endif // CUM_SUM_H