Changeset 3a48772 in sasmodels for sasmodels/models/hollow_rectangular_prism.c

Timestamp:

Oct 14, 2016 3:23:40 PM (8 years ago)

Author:

Paul Kienzle <pkienzle@…>

Branches:

master, core_shell_microgels, costrafo411, magnetic_model, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests

Children:

a5b6997

Parents:

b716cc6

Message:

use predefined constants for fractions of pi

File:

• sasmodels/models/hollow_rectangular_prism.c (modified) (2 diffs)

sasmodels/models/hollow_rectangular_prism.c

@@ -34 +34 @@
    //Integration limits to use in Gaussian quadrature
     double v1a = 0.0;
-    double v1b = 0.5 * M_PI;  //theta integration limits
+    double v1b = M_PI_2;  //theta integration limits
     double v2a = 0.0;
-    double v2b = 0.5 * M_PI;  //phi integration limits
+    double v2b = M_PI_2;  //phi integration limits
     
     //Order of integration
@@ -88 +88 @@
     // Normalize as in Eqn. (15) without the volume factor (as cancels with (V*DelRho)^2 normalization)
     // The factor 2 is due to the different theta integration limit (pi/2 instead of pi)
-    answer *= (2.0/M_PI);
+    answer /= M_PI_2;
 
     // Multiply by contrast^2. Factor corresponding to volume^2 cancels with previous normalization.