source: sasview/sansmodels/src/sans/models/c_extensions/DiamCyl.c @ c6d3301

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Last change on this file since c6d3301 was 5eb9154, checked in by Jae Cho <jhjcho@…>, 15 years ago

calculation of the effective radius are added

  • Property mode set to 100644
File size: 932 bytes
Line 
1/**
2 * SquareWell Structure factor
3 * @author: Jae Hie Cho / UTK
4 */
5
6#include "DiamCyl.h"
7#include "libStructureFactor.h"
8#include <math.h>
9
10
11/**
12 * Function to evaluate 1D scattering function
13 * @param pars: parameters of the DiaEllip
14 * @param q: q-value ; NOT used
15 * @return: 2 virial coefficient value
16 */
17double DiamCyld_analytical_1D(DiamCyldParameters *pars, double q) {
18        double cylh;
19        double cylr;
20
21        cylr = pars->radius;
22        cylh = pars->length;
23        return DiamCyl(cylh, cylr);
24}
25
26/**
27 * Function to evaluate 2D scattering function
28 * @param pars: parameters of the RadiEllip
29 * @param q: q-value
30 * @return: function value
31 */
32double DiamCyld_analytical_2D(DiamCyldParameters *pars, double q, double phi) {
33        return DiamCyld_analytical_1D(pars,q);
34}
35
36double DiamCyld_analytical_2DXY(DiamCyldParameters *pars, double qx, double qy){
37        return DiamCyld_analytical_1D(pars,sqrt(qx*qx+qy*qy));
38}
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