Changeset a1ecfc3 in sasview for sansmodels/src/sans/models

Timestamp:

Oct 7, 2010 3:48:06 PM (14 years ago)

Author:

Jae Cho <jhjcho@…>

Branches:

master, ESS_GUI, ESS_GUI_Docs, ESS_GUI_batch_fitting, ESS_GUI_bumps_abstraction, ESS_GUI_iss1116, ESS_GUI_iss879, ESS_GUI_iss959, ESS_GUI_opencl, ESS_GUI_ordering, ESS_GUI_sync_sascalc, costrafo411, magnetic_scatt, release-4.1.1, release-4.1.2, release-4.2.2, release_4.0.1, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1243, ticket-1249, ticket885, unittest-saveload

Children:

94a3f8f

Parents:

fbae881

Message:

found and fixed number precision error

File:

• sansmodels/src/sans/models/c_extensions/parallelepiped.c (modified) (3 diffs)

sansmodels/src/sans/models/c_extensions/parallelepiped.c

@@ -39 +39 @@
 
     //handle arg=0 separately, as sin(t)/t -> 1 as t->0
-    argA = a*ala/2;
-    argB = b*alb/2;
-    argC = c*alc/2;
+    argA = a*ala/2.0;
+    argB = b*alb/2.0;
+    argC = c*alc/2.0;
     if(argA==0.0) {
                 tmp1 = 1.0;
@@ -117 +117 @@
 
     // q vector
-    q_z = 0;
+    q_z = 0.0;
 
     // Compute the angle btw vector q and the
@@ -133 +133 @@
 
     // parallelepiped b axis orientation
-    bparallel_x = sqrt(1-sin(pars->parallel_theta)*cos(pars->parallel_phi))*cos(pars->parallel_psi);//cos(pars->parallel_theta) * cos(pars->parallel_phi)* cos(pars->parallel_psi);
-    bparallel_y = sqrt(1-sin(pars->parallel_theta)*cos(pars->parallel_phi))*sin(pars->parallel_psi);//cos(pars->parallel_theta) * sin(pars->parallel_phi)* sin(pars->parallel_psi);
+    bparallel_x = sqrt(1.0-sin(pars->parallel_theta)*cos(pars->parallel_phi))*cos(pars->parallel_psi);//cos(pars->parallel_theta) * cos(pars->parallel_phi)* cos(pars->parallel_psi);
+    bparallel_y = sqrt(1.0-sin(pars->parallel_theta)*cos(pars->parallel_phi))*sin(pars->parallel_psi);//cos(pars->parallel_theta) * sin(pars->parallel_phi)* sin(pars->parallel_psi);
     // axis of the parallelepiped
     cos_val_b = sin(acos(cos_val_a)) ;