core_shell_microgelsmagnetic_modelticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
Last change
on this file since 4493288 was
c3ccaec,
checked in by GitHub <noreply@…>, 7 years ago
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Merge branch 'master' into ticket-815
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-
Property mode set to
100644
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File size:
881 bytes
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Rev | Line | |
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[f7930be] | 1 | |
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| 2 | static double |
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| 3 | f_constant(double q, double r, double sld) |
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| 4 | { |
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[925ad6e] | 5 | const double bes = sas_3j1x_x(q * r); |
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[c5ac2b2] | 6 | const double vol = M_4PI_3 * cube(r); |
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[f7930be] | 7 | return sld * vol * bes; |
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| 8 | } |
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| 9 | |
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[21fbab1] | 10 | static double |
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| 11 | form_volume(double core_radius, double fp_n, double thickness[]) |
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[f7930be] | 12 | { |
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| 13 | double r = core_radius; |
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[21fbab1] | 14 | int n = (int)(fp_n+0.5); |
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[c5ac2b2] | 15 | for (int i=0; i < n; i++) { |
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[f7930be] | 16 | r += thickness[i]; |
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| 17 | } |
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[c5ac2b2] | 18 | return M_4PI_3 * cube(r); |
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[f7930be] | 19 | } |
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| 20 | |
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[21fbab1] | 21 | static double |
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[c5ac2b2] | 22 | Iq(double q, double core_sld, double core_radius, |
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[21fbab1] | 23 | double solvent_sld, double fp_n, double sld[], double thickness[]) |
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[f7930be] | 24 | { |
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[21fbab1] | 25 | const int n = (int)(fp_n+0.5); |
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[c5ac2b2] | 26 | double f, r, last_sld; |
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[f7930be] | 27 | r = core_radius; |
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[c5ac2b2] | 28 | last_sld = core_sld; |
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| 29 | f = 0.; |
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| 30 | for (int i=0; i<n; i++) { |
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[925ad6e] | 31 | f += M_4PI_3 * cube(r) * (sld[i] - last_sld) * sas_3j1x_x(q*r); |
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[c5ac2b2] | 32 | last_sld = sld[i]; |
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[f7930be] | 33 | r += thickness[i]; |
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| 34 | } |
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[925ad6e] | 35 | f += M_4PI_3 * cube(r) * (solvent_sld - last_sld) * sas_3j1x_x(q*r); |
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[c5ac2b2] | 36 | return f * f * 1.0e-4; |
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[f7930be] | 37 | } |
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