source: sasview/sansmodels/src/sans/models/c_models/CPearlNecklaceModel.cpp @ 01de557

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Last change on this file since 01de557 was 0b082f3, checked in by Mathieu Doucet <doucetm@…>, 13 years ago

Re #7 Enable openmp for all models
  • Property mode set to 100644
File size: 22.7 KB
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1/**
2        This software was developed by the University of Tennessee as part of the
3        Distributed Data Analysis of Neutron Scattering Experiments (DANSE)
4        project funded by the US National Science Foundation.
5
6        If you use DANSE applications to do scientific research that leads to
7        publication, we ask that you acknowledge the use of the software with the
8        following sentence:
9
10        "This work benefited from DANSE software developed under NSF award DMR-0520547."
11
12        copyright 2008, University of Tennessee
13 */
14
15/** CPearlNecklaceModel
16 *
17 * C extension
18 *
19 * WARNING: THIS FILE WAS GENERATED BY WRAPPERGENERATOR.PY
20 *          DO NOT MODIFY THIS FILE, MODIFY pearlnecklace.h
21 *          AND RE-RUN THE GENERATOR SCRIPT
22 *
23 */
24#define NO_IMPORT_ARRAY
25#define PY_ARRAY_UNIQUE_SYMBOL PyArray_API_sans
26 
27extern "C" {
28#include <Python.h>
29#include <arrayobject.h>
30#include "structmember.h"
31#include <stdio.h>
32#include <stdlib.h>
33#include <math.h>
34#include <time.h>
35#include "pearlnecklace.h"
36}
37
38#include "models.hh"
39#include "dispersion_visitor.hh"
40
41/// Error object for raised exceptions
42static PyObject * CPearlNecklaceModelError = NULL;
43
44
45// Class definition
46typedef struct {
47    PyObject_HEAD
48    /// Parameters
49    PyObject * params;
50    /// Dispersion parameters
51    PyObject * dispersion;
52    /// Underlying model object
53    PearlNecklaceModel * model;
54    /// Log for unit testing
55    PyObject * log;
56} CPearlNecklaceModel;
57
58
59static void
60CPearlNecklaceModel_dealloc(CPearlNecklaceModel* self)
61{
62    Py_DECREF(self->params);
63    Py_DECREF(self->dispersion);
64    Py_DECREF(self->log);
65    delete self->model;
66    self->ob_type->tp_free((PyObject*)self);
67   
68
69}
70
71static PyObject *
72CPearlNecklaceModel_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
73{
74    CPearlNecklaceModel *self;
75   
76    self = (CPearlNecklaceModel *)type->tp_alloc(type, 0);
77   
78    return (PyObject *)self;
79}
80
81static int
82CPearlNecklaceModel_init(CPearlNecklaceModel *self, PyObject *args, PyObject *kwds)
83{
84    if (self != NULL) {
85       
86        // Create parameters
87        self->params = PyDict_New();
88        self->dispersion = PyDict_New();
89        self->model = new PearlNecklaceModel();
90       
91        // Initialize parameter dictionary
92        PyDict_SetItemString(self->params,"num_pearls",Py_BuildValue("d",3.000000000000));
93        PyDict_SetItemString(self->params,"scale",Py_BuildValue("d",1.000000000000));
94        PyDict_SetItemString(self->params,"thick_string",Py_BuildValue("d",2.500000000000));
95        PyDict_SetItemString(self->params,"sld_string",Py_BuildValue("d",0.000001000000));
96        PyDict_SetItemString(self->params,"edge_separation",Py_BuildValue("d",350.000000000000));
97        PyDict_SetItemString(self->params,"sld_pearl",Py_BuildValue("d",0.000001000000));
98        PyDict_SetItemString(self->params,"radius",Py_BuildValue("d",80.000000000000));
99        PyDict_SetItemString(self->params,"background",Py_BuildValue("d",0.000000000000));
100        PyDict_SetItemString(self->params,"sld_solv",Py_BuildValue("d",0.000006300000));
101        // Initialize dispersion / averaging parameter dict
102        DispersionVisitor* visitor = new DispersionVisitor();
103        PyObject * disp_dict;
104        disp_dict = PyDict_New();
105        self->model->radius.dispersion->accept_as_source(visitor, self->model->radius.dispersion, disp_dict);
106        PyDict_SetItemString(self->dispersion, "radius", disp_dict);
107        disp_dict = PyDict_New();
108        self->model->edge_separation.dispersion->accept_as_source(visitor, self->model->edge_separation.dispersion, disp_dict);
109        PyDict_SetItemString(self->dispersion, "edge_separation", disp_dict);
110
111
112         
113        // Create empty log
114        self->log = PyDict_New();
115       
116       
117
118    }
119    return 0;
120}
121
122static char name_params[] = "params";
123static char def_params[] = "Parameters";
124static char name_dispersion[] = "dispersion";
125static char def_dispersion[] = "Dispersion parameters";
126static char name_log[] = "log";
127static char def_log[] = "Log";
128
129static PyMemberDef CPearlNecklaceModel_members[] = {
130    {name_params, T_OBJECT, offsetof(CPearlNecklaceModel, params), 0, def_params},
131        {name_dispersion, T_OBJECT, offsetof(CPearlNecklaceModel, dispersion), 0, def_dispersion},     
132    {name_log, T_OBJECT, offsetof(CPearlNecklaceModel, log), 0, def_log},
133    {NULL}  /* Sentinel */
134};
135
136/** Read double from PyObject
137    @param p PyObject
138    @return double
139*/
140double CPearlNecklaceModel_readDouble(PyObject *p) {
141    if (PyFloat_Check(p)==1) {
142        return (double)(((PyFloatObject *)(p))->ob_fval);
143    } else if (PyInt_Check(p)==1) {
144        return (double)(((PyIntObject *)(p))->ob_ival);
145    } else if (PyLong_Check(p)==1) {
146        return (double)PyLong_AsLong(p);
147    } else {
148        return 0.0;
149    }
150}
151/**
152 * Function to call to evaluate model
153 * @param args: input numpy array q[]
154 * @return: numpy array object
155 */
156 
157static PyObject *evaluateOneDim(PearlNecklaceModel* model, PyArrayObject *q){
158    PyArrayObject *result;
159   
160    // Check validity of array q , q must be of dimension 1, an array of double
161    if (q->nd != 1 || q->descr->type_num != PyArray_DOUBLE)
162    {
163        //const char * message= "Invalid array: q->nd=%d,type_num=%d\n",q->nd,q->descr->type_num;
164        //PyErr_SetString(PyExc_ValueError , message);
165        return NULL;
166    }
167    result = (PyArrayObject *)PyArray_FromDims(q->nd, (int *)(q->dimensions), 
168                                                                                  PyArray_DOUBLE);
169        if (result == NULL) {
170        const char * message= "Could not create result ";
171        PyErr_SetString(PyExc_RuntimeError , message);
172                return NULL;
173        }
174#pragma omp parallel for
175         for (int i = 0; i < q->dimensions[0]; i++){
176      double q_value  = *(double *)(q->data + i*q->strides[0]);
177      double *result_value = (double *)(result->data + i*result->strides[0]);
178      *result_value =(*model)(q_value);
179        }
180    return PyArray_Return(result); 
181 }
182
183 /**
184 * Function to call to evaluate model
185 * @param args: input numpy array  [x[],y[]]
186 * @return: numpy array object
187 */
188 static PyObject * evaluateTwoDimXY( PearlNecklaceModel* model, 
189                              PyArrayObject *x, PyArrayObject *y)
190 {
191    PyArrayObject *result;
192    int x_len, y_len, dims[1];
193    //check validity of input vectors
194    if (x->nd != 1 || x->descr->type_num != PyArray_DOUBLE
195        || y->nd != 1 || y->descr->type_num != PyArray_DOUBLE
196        || y->dimensions[0] != x->dimensions[0]){
197        const char * message= "evaluateTwoDimXY  expect 2 numpy arrays";
198        PyErr_SetString(PyExc_ValueError , message); 
199        return NULL;
200    }
201   
202        if (PyArray_Check(x) && PyArray_Check(y)) {
203               
204            x_len = dims[0]= x->dimensions[0];
205        y_len = dims[0]= y->dimensions[0];
206           
207            // Make a new double matrix of same dims
208        result=(PyArrayObject *) PyArray_FromDims(1,dims,NPY_DOUBLE);
209        if (result == NULL){
210            const char * message= "Could not create result ";
211        PyErr_SetString(PyExc_RuntimeError , message);
212            return NULL;
213            }
214       
215        /* Do the calculation. */
216#pragma omp parallel for
217        for (int i=0; i< x_len; i++) {
218            double x_value = *(double *)(x->data + i*x->strides[0]);
219                    double y_value = *(double *)(y->data + i*y->strides[0]);
220                        double *result_value = (double *)(result->data +
221                              i*result->strides[0]);
222                        *result_value = (*model)(x_value, y_value);
223        }           
224        return PyArray_Return(result); 
225       
226        }else{
227                    PyErr_SetString(CPearlNecklaceModelError, 
228                   "CPearlNecklaceModel.evaluateTwoDimXY couldn't run.");
229                return NULL;
230                }       
231}
232/**
233 *  evalDistribution function evaluate a model function with input vector
234 *  @param args: input q as vector or [qx, qy] where qx, qy are vectors
235 *
236 */ 
237static PyObject * evalDistribution(CPearlNecklaceModel *self, PyObject *args){
238        PyObject *qx, *qy;
239        PyArrayObject * pars;
240        int npars ,mpars;
241       
242        // Get parameters
243       
244            // Reader parameter dictionary
245    self->model->num_pearls = PyFloat_AsDouble( PyDict_GetItemString(self->params, "num_pearls") );
246    self->model->scale = PyFloat_AsDouble( PyDict_GetItemString(self->params, "scale") );
247    self->model->thick_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "thick_string") );
248    self->model->sld_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_string") );
249    self->model->edge_separation = PyFloat_AsDouble( PyDict_GetItemString(self->params, "edge_separation") );
250    self->model->sld_pearl = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_pearl") );
251    self->model->radius = PyFloat_AsDouble( PyDict_GetItemString(self->params, "radius") );
252    self->model->background = PyFloat_AsDouble( PyDict_GetItemString(self->params, "background") );
253    self->model->sld_solv = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_solv") );
254    // Read in dispersion parameters
255    PyObject* disp_dict;
256    DispersionVisitor* visitor = new DispersionVisitor();
257    disp_dict = PyDict_GetItemString(self->dispersion, "radius");
258    self->model->radius.dispersion->accept_as_destination(visitor, self->model->radius.dispersion, disp_dict);
259    disp_dict = PyDict_GetItemString(self->dispersion, "edge_separation");
260    self->model->edge_separation.dispersion->accept_as_destination(visitor, self->model->edge_separation.dispersion, disp_dict);
261
262       
263        // Get input and determine whether we have to supply a 1D or 2D return value.
264        if ( !PyArg_ParseTuple(args,"O",&pars) ) {
265            PyErr_SetString(CPearlNecklaceModelError, 
266                "CPearlNecklaceModel.evalDistribution expects a q value.");
267                return NULL;
268        }
269    // Check params
270       
271    if(PyArray_Check(pars)==1) {
272               
273            // Length of list should 1 or 2
274            npars = pars->nd; 
275            if(npars==1) {
276                // input is a numpy array
277                if (PyArray_Check(pars)) {
278                        return evaluateOneDim(self->model, (PyArrayObject*)pars); 
279                    }
280                }else{
281                    PyErr_SetString(CPearlNecklaceModelError, 
282                   "CPearlNecklaceModel.evalDistribution expect numpy array of one dimension.");
283                return NULL;
284                }
285    }else if( PyList_Check(pars)==1) {
286        // Length of list should be 2 for I(qx,qy)
287            mpars = PyList_GET_SIZE(pars); 
288            if(mpars!=2) {
289                PyErr_SetString(CPearlNecklaceModelError, 
290                        "CPearlNecklaceModel.evalDistribution expects a list of dimension 2.");
291                return NULL;
292            }
293             qx = PyList_GET_ITEM(pars,0);
294             qy = PyList_GET_ITEM(pars,1);
295             if (PyArray_Check(qx) && PyArray_Check(qy)) {
296                 return evaluateTwoDimXY(self->model, (PyArrayObject*)qx,
297                           (PyArrayObject*)qy);
298                 }else{
299                    PyErr_SetString(CPearlNecklaceModelError, 
300                   "CPearlNecklaceModel.evalDistribution expect 2 numpy arrays in list.");
301                return NULL;
302             }
303        }
304        PyErr_SetString(CPearlNecklaceModelError, 
305                   "CPearlNecklaceModel.evalDistribution couln't be run.");
306        return NULL;
307       
308}
309
310/**
311 * Function to call to evaluate model
312 * @param args: input q or [q,phi]
313 * @return: function value
314 */
315static PyObject * run(CPearlNecklaceModel *self, PyObject *args) {
316        double q_value, phi_value;
317        PyObject* pars;
318        int npars;
319       
320        // Get parameters
321       
322            // Reader parameter dictionary
323    self->model->num_pearls = PyFloat_AsDouble( PyDict_GetItemString(self->params, "num_pearls") );
324    self->model->scale = PyFloat_AsDouble( PyDict_GetItemString(self->params, "scale") );
325    self->model->thick_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "thick_string") );
326    self->model->sld_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_string") );
327    self->model->edge_separation = PyFloat_AsDouble( PyDict_GetItemString(self->params, "edge_separation") );
328    self->model->sld_pearl = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_pearl") );
329    self->model->radius = PyFloat_AsDouble( PyDict_GetItemString(self->params, "radius") );
330    self->model->background = PyFloat_AsDouble( PyDict_GetItemString(self->params, "background") );
331    self->model->sld_solv = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_solv") );
332    // Read in dispersion parameters
333    PyObject* disp_dict;
334    DispersionVisitor* visitor = new DispersionVisitor();
335    disp_dict = PyDict_GetItemString(self->dispersion, "radius");
336    self->model->radius.dispersion->accept_as_destination(visitor, self->model->radius.dispersion, disp_dict);
337    disp_dict = PyDict_GetItemString(self->dispersion, "edge_separation");
338    self->model->edge_separation.dispersion->accept_as_destination(visitor, self->model->edge_separation.dispersion, disp_dict);
339
340       
341        // Get input and determine whether we have to supply a 1D or 2D return value.
342        if ( !PyArg_ParseTuple(args,"O",&pars) ) {
343            PyErr_SetString(CPearlNecklaceModelError, 
344                "CPearlNecklaceModel.run expects a q value.");
345                return NULL;
346        }
347         
348        // Check params
349        if( PyList_Check(pars)==1) {
350               
351                // Length of list should be 2 for I(q,phi)
352            npars = PyList_GET_SIZE(pars); 
353            if(npars!=2) {
354                PyErr_SetString(CPearlNecklaceModelError, 
355                        "CPearlNecklaceModel.run expects a double or a list of dimension 2.");
356                return NULL;
357            }
358            // We have a vector q, get the q and phi values at which
359            // to evaluate I(q,phi)
360            q_value = CPearlNecklaceModel_readDouble(PyList_GET_ITEM(pars,0));
361            phi_value = CPearlNecklaceModel_readDouble(PyList_GET_ITEM(pars,1));
362            // Skip zero
363            if (q_value==0) {
364                return Py_BuildValue("d",0.0);
365            }
366                return Py_BuildValue("d",(*(self->model)).evaluate_rphi(q_value,phi_value));
367
368        } else {
369
370                // We have a scalar q, we will evaluate I(q)
371                q_value = CPearlNecklaceModel_readDouble(pars);         
372               
373                return Py_BuildValue("d",(*(self->model))(q_value));
374        }       
375}
376/**
377 * Function to call to calculate_ER
378 * @return: effective radius value
379 */
380static PyObject * calculate_ER(CPearlNecklaceModel *self) {
381
382        // Get parameters
383       
384            // Reader parameter dictionary
385    self->model->num_pearls = PyFloat_AsDouble( PyDict_GetItemString(self->params, "num_pearls") );
386    self->model->scale = PyFloat_AsDouble( PyDict_GetItemString(self->params, "scale") );
387    self->model->thick_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "thick_string") );
388    self->model->sld_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_string") );
389    self->model->edge_separation = PyFloat_AsDouble( PyDict_GetItemString(self->params, "edge_separation") );
390    self->model->sld_pearl = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_pearl") );
391    self->model->radius = PyFloat_AsDouble( PyDict_GetItemString(self->params, "radius") );
392    self->model->background = PyFloat_AsDouble( PyDict_GetItemString(self->params, "background") );
393    self->model->sld_solv = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_solv") );
394    // Read in dispersion parameters
395    PyObject* disp_dict;
396    DispersionVisitor* visitor = new DispersionVisitor();
397    disp_dict = PyDict_GetItemString(self->dispersion, "radius");
398    self->model->radius.dispersion->accept_as_destination(visitor, self->model->radius.dispersion, disp_dict);
399    disp_dict = PyDict_GetItemString(self->dispersion, "edge_separation");
400    self->model->edge_separation.dispersion->accept_as_destination(visitor, self->model->edge_separation.dispersion, disp_dict);
401
402               
403        return Py_BuildValue("d",(*(self->model)).calculate_ER());
404
405}
406/**
407 * Function to call to evaluate model in cartesian coordinates
408 * @param args: input q or [qx, qy]]
409 * @return: function value
410 */
411static PyObject * runXY(CPearlNecklaceModel *self, PyObject *args) {
412        double qx_value, qy_value;
413        PyObject* pars;
414        int npars;
415       
416        // Get parameters
417       
418            // Reader parameter dictionary
419    self->model->num_pearls = PyFloat_AsDouble( PyDict_GetItemString(self->params, "num_pearls") );
420    self->model->scale = PyFloat_AsDouble( PyDict_GetItemString(self->params, "scale") );
421    self->model->thick_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "thick_string") );
422    self->model->sld_string = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_string") );
423    self->model->edge_separation = PyFloat_AsDouble( PyDict_GetItemString(self->params, "edge_separation") );
424    self->model->sld_pearl = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_pearl") );
425    self->model->radius = PyFloat_AsDouble( PyDict_GetItemString(self->params, "radius") );
426    self->model->background = PyFloat_AsDouble( PyDict_GetItemString(self->params, "background") );
427    self->model->sld_solv = PyFloat_AsDouble( PyDict_GetItemString(self->params, "sld_solv") );
428    // Read in dispersion parameters
429    PyObject* disp_dict;
430    DispersionVisitor* visitor = new DispersionVisitor();
431    disp_dict = PyDict_GetItemString(self->dispersion, "radius");
432    self->model->radius.dispersion->accept_as_destination(visitor, self->model->radius.dispersion, disp_dict);
433    disp_dict = PyDict_GetItemString(self->dispersion, "edge_separation");
434    self->model->edge_separation.dispersion->accept_as_destination(visitor, self->model->edge_separation.dispersion, disp_dict);
435
436       
437        // Get input and determine whether we have to supply a 1D or 2D return value.
438        if ( !PyArg_ParseTuple(args,"O",&pars) ) {
439            PyErr_SetString(CPearlNecklaceModelError, 
440                "CPearlNecklaceModel.run expects a q value.");
441                return NULL;
442        }
443         
444        // Check params
445        if( PyList_Check(pars)==1) {
446               
447                // Length of list should be 2 for I(qx, qy))
448            npars = PyList_GET_SIZE(pars); 
449            if(npars!=2) {
450                PyErr_SetString(CPearlNecklaceModelError, 
451                        "CPearlNecklaceModel.run expects a double or a list of dimension 2.");
452                return NULL;
453            }
454            // We have a vector q, get the qx and qy values at which
455            // to evaluate I(qx,qy)
456            qx_value = CPearlNecklaceModel_readDouble(PyList_GET_ITEM(pars,0));
457            qy_value = CPearlNecklaceModel_readDouble(PyList_GET_ITEM(pars,1));
458            return Py_BuildValue("d",(*(self->model))(qx_value,qy_value));
459
460        } else {
461
462                // We have a scalar q, we will evaluate I(q)
463                qx_value = CPearlNecklaceModel_readDouble(pars);               
464               
465                return Py_BuildValue("d",(*(self->model))(qx_value));
466        }       
467}
468
469static PyObject * reset(CPearlNecklaceModel *self, PyObject *args) {
470   
471
472    return Py_BuildValue("d",0.0);
473}
474
475static PyObject * set_dispersion(CPearlNecklaceModel *self, PyObject *args) {
476        PyObject * disp;
477        const char * par_name;
478
479        if ( !PyArg_ParseTuple(args,"sO", &par_name, &disp) ) {
480            PyErr_SetString(CPearlNecklaceModelError,
481                "CPearlNecklaceModel.set_dispersion expects a DispersionModel object.");
482                return NULL;
483        }
484        void *temp = PyCObject_AsVoidPtr(disp);
485        DispersionModel * dispersion = static_cast<DispersionModel *>(temp);
486
487
488        // Ugliness necessary to go from python to C
489            // TODO: refactor this
490    if (!strcmp(par_name, "radius")) {
491        self->model->radius.dispersion = dispersion;
492    } else    if (!strcmp(par_name, "edge_separation")) {
493        self->model->edge_separation.dispersion = dispersion;
494    } else {
495            PyErr_SetString(CPearlNecklaceModelError,
496                "CPearlNecklaceModel.set_dispersion expects a valid parameter name.");
497                return NULL;
498        }
499
500        DispersionVisitor* visitor = new DispersionVisitor();
501        PyObject * disp_dict = PyDict_New();
502        dispersion->accept_as_source(visitor, dispersion, disp_dict);
503        PyDict_SetItemString(self->dispersion, par_name, disp_dict);
504    return Py_BuildValue("i",1);
505}
506
507
508static PyMethodDef CPearlNecklaceModel_methods[] = {
509    {"run",      (PyCFunction)run     , METH_VARARGS,
510      "Evaluate the model at a given Q or Q, phi"},
511    {"runXY",      (PyCFunction)runXY     , METH_VARARGS,
512      "Evaluate the model at a given Q or Qx, Qy"},
513    {"calculate_ER",      (PyCFunction)calculate_ER     , METH_VARARGS,
514      "Evaluate the model at a given Q or Q, phi"},
515     
516    {"evalDistribution",  (PyCFunction)evalDistribution , METH_VARARGS,
517      "Evaluate the model at a given Q or Qx, Qy vector "},
518    {"reset",    (PyCFunction)reset   , METH_VARARGS,
519      "Reset pair correlation"},
520    {"set_dispersion",      (PyCFunction)set_dispersion     , METH_VARARGS,
521      "Set the dispersion model for a given parameter"},
522   {NULL}
523};
524
525static PyTypeObject CPearlNecklaceModelType = {
526    PyObject_HEAD_INIT(NULL)
527    0,                         /*ob_size*/
528    "CPearlNecklaceModel",             /*tp_name*/
529    sizeof(CPearlNecklaceModel),             /*tp_basicsize*/
530    0,                         /*tp_itemsize*/
531    (destructor)CPearlNecklaceModel_dealloc, /*tp_dealloc*/
532    0,                         /*tp_print*/
533    0,                         /*tp_getattr*/
534    0,                         /*tp_setattr*/
535    0,                         /*tp_compare*/
536    0,                         /*tp_repr*/
537    0,                         /*tp_as_number*/
538    0,                         /*tp_as_sequence*/
539    0,                         /*tp_as_mapping*/
540    0,                         /*tp_hash */
541    0,                         /*tp_call*/
542    0,                         /*tp_str*/
543    0,                         /*tp_getattro*/
544    0,                         /*tp_setattro*/
545    0,                         /*tp_as_buffer*/
546    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
547    "CPearlNecklaceModel objects",           /* tp_doc */
548    0,                         /* tp_traverse */
549    0,                         /* tp_clear */
550    0,                         /* tp_richcompare */
551    0,                         /* tp_weaklistoffset */
552    0,                         /* tp_iter */
553    0,                         /* tp_iternext */
554    CPearlNecklaceModel_methods,             /* tp_methods */
555    CPearlNecklaceModel_members,             /* tp_members */
556    0,                         /* tp_getset */
557    0,                         /* tp_base */
558    0,                         /* tp_dict */
559    0,                         /* tp_descr_get */
560    0,                         /* tp_descr_set */
561    0,                         /* tp_dictoffset */
562    (initproc)CPearlNecklaceModel_init,      /* tp_init */
563    0,                         /* tp_alloc */
564    CPearlNecklaceModel_new,                 /* tp_new */
565};
566
567
568//static PyMethodDef module_methods[] = {
569//    {NULL}
570//};
571
572/**
573 * Function used to add the model class to a module
574 * @param module: module to add the class to
575 */ 
576void addCPearlNecklaceModel(PyObject *module) {
577        PyObject *d;
578       
579    if (PyType_Ready(&CPearlNecklaceModelType) < 0)
580        return;
581
582    Py_INCREF(&CPearlNecklaceModelType);
583    PyModule_AddObject(module, "CPearlNecklaceModel", (PyObject *)&CPearlNecklaceModelType);
584   
585    d = PyModule_GetDict(module);
586    static char error_name[] = "CPearlNecklaceModel.error";
587    CPearlNecklaceModelError = PyErr_NewException(error_name, NULL, NULL);
588    PyDict_SetItemString(d, "CPearlNecklaceModelError", CPearlNecklaceModelError);
589}
590
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