Changeset 251f54b in sasmodels
- Timestamp:
- Oct 18, 2016 11:10:48 AM (8 years ago)
- Branches:
- master, core_shell_microgels, costrafo411, magnetic_model, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests
- Children:
- 6f676fb
- Parents:
- 0a3d9b2
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
sasmodels/models/elliptical_cylinder.c
r68425bf r251f54b 6 6 7 7 8 9 static double 10 _kernel(double q, double radius_minor, double r_ratio, double theta) 11 { 12 // This is the function LAMBDA1^2 in Feigin's notation 13 // q is the q-value for the calculation (1/A) 14 // radius_minor is the transformed radius"a" in Feigin's notation 15 // r_ratio is the ratio (major radius)/(minor radius) of the Ellipsoid [=] --- 16 // theta is the dummy variable of the integration 17 18 double retval,arg; 19 20 arg = q*radius_minor*sqrt((1.0+r_ratio*r_ratio)/2+(1.0-r_ratio*r_ratio)*cos(theta)/2); 21 //retval = 2.0*J1(arg)/arg; 22 retval = sas_J1c(arg); 23 return retval*retval ; 24 } 25 26 27 double form_volume(double radius_minor, double r_ratio, double length) 8 double 9 form_volume(double radius_minor, double r_ratio, double length) 28 10 { 29 11 return M_PI * radius_minor * radius_minor * r_ratio * length;
Note: See TracChangeset
for help on using the changeset viewer.