source: sasview/sansmodels/src/sans/models/c_extensions/sphere.c @ a0da535

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Last change on this file since a0da535 was f10063e, checked in by Jae Cho <jhjcho@…>, 15 years ago

Updated the definition of SLD params according to new libigor functions

  • Property mode set to 100644
File size: 947 bytes
Line 
1/**
2 * Scattering model for a sphere
3 * @author: Mathieu Doucet / UTK
4 */
5
6#include "sphere.h"
7#include "libSphere.h"
8#include <math.h>
9
10
11/**
12 * Function to evaluate 1D scattering function
13 * @param pars: parameters of the sphere
14 * @param q: q-value
15 * @return: function value
16 */
17double sphere_analytical_1D(SphereParameters *pars, double q) {
18        double dp[5];
19
20        dp[0] = pars->scale;
21        dp[1] = pars->radius;
22        dp[2] = pars->sldSph;
23        dp[3] = pars->sldSolv;
24        dp[4] = pars->background;
25
26        return SphereForm(dp, q);
27}
28
29/**
30 * Function to evaluate 2D scattering function
31 * @param pars: parameters of the sphere
32 * @param q: q-value
33 * @return: function value
34 */
35double sphere_analytical_2D(SphereParameters *pars, double q, double phi) {
36        return sphere_analytical_1D(pars,q);
37}
38
39double sphere_analytical_2DXY(SphereParameters *pars, double qx, double qy){
40        return sphere_analytical_1D(pars,sqrt(qx*qx+qy*qy));
41}
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