source: sans/XOP_Dev/MonteCarlo/Metropolis.h

/*
 *  Metropolis.h
 *  SANSAnalysis
 *
 *  Created by Steve Kline on 7/15/14.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */


// All structures passed to Igor are two-byte aligned.
#pragma pack(2)

struct Metropolis_Params {     // This structure must be 2-byte-aligned because it receives parameters from Igor.
        double gCount;
        double nIter;
        double nVox;
        double tVox;
        double radius;
        waveHndl energyH;
        waveHndl zzH;
        waveHndl yyH;
        waveHndl xxH;
        waveHndl UofRH;
        void* tp;                               //unused void for ThreadSafe functions
        double retVal;          // return value is unused, save for error if needed
};
typedef struct Metropolis_Params Metropolis_Params;
typedef struct Metropolis_Params *Metropolis_ParamsPtr;

/*
struct MetroEnergy_Params {   
        double index;
        double rz;
        double ry;
        double rx;
        double nVox;
        double tVox;
        double radius;
        waveHndl zzH;
        waveHndl yyH;
        waveHndl xxH;
        waveHndl UofRH;
        void* tp;                               
        double retVal;
};
typedef struct MetroEnergy_Params MetroEnergy_Params;
typedef struct MetroEnergy_Params *MetroEnergy_ParamsPtr;
*/

#pragma pack()          // return to default structure packing

// function prototypes - communicates w/Igor
int MetropolisX(Metropolis_ParamsPtr p);


// internal to the XOP
double M_energy(double ur[], double xx[], double yy[], double zz[], double tVox, CountInt nVox, double dx, double dy, double dz, CountInt jj, CountInt num);
double M_TotalEnergy(double ur[], double xx[], double yy[], double zz[], double tVox, CountInt nVox, CountInt num);