source: sasview/sansmodels/src/sans/models/c_extensions/binaryHS.c @ 0b12abb5

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Last change on this file since 0b12abb5 was 3d25331f, checked in by Gervaise Alina <gervyh@…>, 15 years ago

add more model 1d and 2 D

  • Property mode set to 100644
File size: 1.1 KB
RevLine 
[3d25331f]1/**
2 * Scattering model for a sphere
3 * @author: Gervaise B alina / UTK
4 */
5
6#include "binaryHS.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 binary hard sphere
14 * @param q: q-value
15 * @return: function value
16 */
17double binaryHS_analytical_1D(BinaryHSParameters *pars, double q) {
18        double dp[8];
19       
20        dp[0] = pars->l_radius;
21        dp[1] = pars->s_radius;
22        dp[2] = pars->vol_frac_ls;
23        dp[3] = pars->vol_frac_ss;
24        dp[4] = pars->ls_sld;
25        dp[5] = pars->ss_sld;
26        dp[6] = pars->solvent_sld;
27        dp[7] = pars->background;
28       
29        return BinaryHS(dp, q);
30}
31   
32/**
33 * Function to evaluate 2D scattering function
34 * @param pars: parameters of the binary hard sphere
35 * @param q: q-value
36 * @return: function value
37 */
38double binaryHS_analytical_2D(BinaryHSParameters *pars, double q, double phi) {
39        return binaryHS_analytical_1D(pars,q);
40}
41
42double binaryHS_analytical_2DXY(BinaryHSParameters *pars, double qx, double qy){
43        return binaryHS_analytical_1D(pars,sqrt(qx*qx+qy*qy)); 
44}
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