source: sasview/sansmodels/src/sans/models/c_extensions/Hardsphere.c @ db1dcef

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Last change on this file since db1dcef was 25579e8, checked in by Jae Cho <jhjcho@…>, 16 years ago

Enable structure factors

  • Property mode set to 100644
File size: 978 bytes
Line 
1/**
2 * Structure factor for a hardsphere
3 * @author: Jae Hie Cho / UTK
4 */
5
6#include "Hardsphere.h"
7#include "libStructureFactor.h"
8#include <math.h>
9#include <stdio.h>
10
11/**
12 * Function to evaluate 1D scattering function
13 * @param pars: parameters of the HardsphereStructure
14 * @param q: q-value
15 * @return: function value
16 */
17double Hardsphere_analytical_1D(HardsphereParameters *pars, double q) {
18        double dp[2];
19       
20        dp[0] = pars->radius;
21        dp[1] = pars->volfraction;     
22        return HardSphereStruct(dp, q);
23}
24   
25/**
26 * Function to evaluate 2D scattering function
27 * @param pars: parameters of the HardsphereStructure
28 * @param q: q-value
29 * @return: function value
30 */
31double Hardsphere_analytical_2D(HardsphereParameters *pars, double q, double phi) {
32        return Hardsphere_analytical_1D(pars,q);
33}
34
35double Hardsphere_analytical_2DXY(HardsphereParameters *pars, double qx, double qy){
36        return Hardsphere_analytical_1D(pars,sqrt(qx*qx+qy*qy));       
37}
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