DigitalBreastTomosynthesis/Functions/Sources/backprojectionDDb_mex_CUDA/backprojectionDDb_mex_cuda.h

/*
%% Author: Rodrigo de Barros Vimieiro
% Date: March, 2019
% rodrigo.vimieiro@gmail.com
% =========================================================================
%{
% -------------------------------------------------------------------------
%
% -------------------------------------------------------------------------
%     DESCRIPTION:
%     This is the header function
%     ---------------------------------------------------------------------
%     Copyright (C) <2019>  <Rodrigo de Barros Vimieiro>
%
%     This program is free software: you can redistribute it and/or modify
%     it under the terms of the GNU General Public License as published by
%     the Free Software Foundation, either version 3 of the License, or
%     (at your option) any later version.
%
%     This program is distributed in the hope that it will be useful,
%     but WITHOUT ANY WARRANTY; without even the implied warranty of
%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%     GNU General Public License for more details.
%
%     You should have received a copy of the GNU General Public License
%     along with this program.  If not, see <http://www.gnu.org/licenses/>.
%}
% =========================================================================
%% 3-D Distance Driven Back-projection header
*/

//typedef double user_dataType;
//typedef float user_dataType;
//#define user_mexdataType mxDOUBLE_CLASS
//#define user_mexdataType mxSINGLE_CLASS

#include "mex.h"
#define _USE_MATH_DEFINES
#include <math.h>

// Includes CUDA
#include <cuda_runtime.h>

// Utilities and timing functions
#include <helper_functions.h>    // includes cuda.h and cuda_runtime_api.h

// CUDA helper functions
#include <helper_cuda.h>         // helper functions for CUDA error check

#define integrateXcoord 1
#define integrateYcoord 0


/*
Reference: TIGRE - https://github.com/CERN/TIGRE
*/
#define cudaCheckErrors(msg) \
do { \
        cudaError_t __err = cudaGetLastError(); \
        if (__err != cudaSuccess) { \
                mexPrintf("%s \n",msg);\
                mexErrMsgIdAndTxt("MATLAB:mexcpp:typeargin",cudaGetErrorString(__err));\
        } \
} while (0)


void backprojectionDDb(double* const h_pVolume, double* const h_pProj, double* const h_pTubeAngle, double* const h_pDetAngle, const double idXProj, const unsigned int nProj, const unsigned int nPixX,
	const unsigned int nPixY, const unsigned int nSlices, const unsigned int nDetX, const unsigned int nDetY, const double dx, const double dy, double dz, const double du,
	const double dv, const double DSD, const double DDR, const double DAG);