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

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Last change on this file since a0da535 was c724ccd, checked in by Jae Cho <jhjcho@…>, 15 years ago

More models added and correction of Wrappergenerator on model parameter value precision

  • Property mode set to 100644
File size: 983 bytes
Line 
1/**
2 * Fractal scattering model
3 */
4
5#include "fractal.h"
6#include "libTwoPhase.h"
7#include <math.h>
8
9
10/**
11 * Function to evaluate 1D scattering function
12 * @param pars: parameters of the fractal
13 * @param q: q-value
14 * @return: function value
15 */
16double fractal_analytical_1D(FractalParameters *pars, double q) {
17        double dp[7];
18
19        dp[0] = pars->scale;
20        dp[1] = pars->radius;
21        dp[2] = pars->fractal_dim;
22        dp[3] = pars->cor_length;
23        dp[4] = pars->sldBlock;
24        dp[5] = pars->sldSolv;
25        dp[6] = pars->background;
26
27        return Fractal(dp, fabs(q));
28}
29
30/**
31 * Function to evaluate 2D scattering function
32 * @param pars: parameters of the fractal
33 * @param q: q-value
34 * @return: function value
35 */
36double fractal_analytical_2D(FractalParameters *pars, double q, double phi) {
37        return fractal_analytical_1D(pars,q);
38}
39
40double fractal_analytical_2DXY(FractalParameters *pars, double qx, double qy){
41        return fractal_analytical_1D(pars,sqrt(qx*qx+qy*qy));
42}
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