Index: sansmodels/src/sans/models/c_extensions/binaryHS.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/binaryHS.h	(revision 515cc389d00226f76cd5798958f7a3bde543d8c2)
+++ sansmodels/src/sans/models/c_extensions/binaryHS.h	(revision 515cc389d00226f76cd5798958f7a3bde543d8c2)
@@ -0,0 +1,66 @@
+#if !defined(binaryHS_h)
+#define binaryHS_h
+
+/**
+ * Structure definition for binary hard sphere parameters
+
+	[PYTHONCLASS] = BinaryHSModel
+	[DISP_PARAMS] = l_radius,s_radius
+	[DESCRIPTION] =<text> Model parameters: l_radius : large radius of binary hard sphere
+			s_radius : small radius of binary hard sphere
+			vol_frac_ls : volume fraction of large spheres
+			vol_frac_ss : volume fraction of small spheres
+			ls_sld: large sphere  scattering length density
+			ss_sld: small sphere scattering length density
+			solvent_sld: solvent scattering length density
+			background: incoherent background
+               </text>
+	[FIXED]= l_radius.width;s_radius.width
+	[ORIENTATION_PARAMS]= <text> </text>
+ */
+typedef struct {
+
+	///	large radius of the binary hard sphere [A]
+    //  [DEFAULT]=l_radius= 100.0 [A]
+    double l_radius;
+
+    ///	small radius of the binary hard sphere [A]
+    //  [DEFAULT]=s_radius= 25.0 [A]
+    double s_radius;
+
+	///	volume fraction of large spheres
+    //  [DEFAULT]=vol_frac_ls= 0.1
+    double vol_frac_ls;
+
+	///	volume fraction of small spheres
+    //  [DEFAULT]=vol_frac_ss= 0.2
+    double vol_frac_ss;
+
+	///	large sphere scattering length density [1/Å²]
+    //  [DEFAULT]=ls_sld= 3.5e-6 [1/A²]
+    double ls_sld;
+
+	///	lsmall sphere scattering length density [1/Å²]
+    //  [DEFAULT]=ss_sld= 5e-7 [1/A²]
+    double ss_sld;
+
+    ///	solvent scattering length density [1/Å²]
+    //  [DEFAULT]=solvent_sld= 6.36e-6 [1/A²]
+    double solvent_sld;
+
+	/// Incoherent Background [1/cm]
+	//  [DEFAULT]=background=0.001 [1/cm]
+	double background;
+
+} BinaryHSParameters;
+
+
+
+/// 1D scattering function
+double binaryHS_analytical_1D(BinaryHSParameters *pars, double q);
+
+/// 2D scattering function
+double binaryHS_analytical_2D(BinaryHSParameters *pars, double q, double phi);
+double binaryHS_analytical_2DXY(BinaryHSParameters *pars, double qx, double qy);
+
+#endif
Index: sansmodels/src/sans/models/c_extensions/binaryHs.h
===================================================================
--- sansmodels/src/sans/models/c_extensions/binaryHs.h	(revision 975ec8e8211549489759b5a5ffe3b60607de065b)
+++ 	(revision )
@@ -1,66 +1,0 @@
-#if !defined(binaryHS_h)
-#define binaryHS_h
-
-/**
- * Structure definition for binary hard sphere parameters
-
-	[PYTHONCLASS] = BinaryHSModel
-	[DISP_PARAMS] = l_radius,s_radius
-	[DESCRIPTION] =<text> Model parameters: l_radius : large radius of binary hard sphere
-			s_radius : small radius of binary hard sphere
-			vol_frac_ls : volume fraction of large spheres
-			vol_frac_ss : volume fraction of small spheres
-			ls_sld: large sphere  scattering length density
-			ss_sld: small sphere scattering length density
-			solvent_sld: solvent scattering length density
-			background: incoherent background
-               </text>
-	[FIXED]= l_radius.width;s_radius.width
-	[ORIENTATION_PARAMS]= <text> </text>
- */
-typedef struct {
-
-	///	large radius of the binary hard sphere [A]
-    //  [DEFAULT]=l_radius= 100.0 [A]
-    double l_radius;
-
-    ///	small radius of the binary hard sphere [A]
-    //  [DEFAULT]=s_radius= 25.0 [A]
-    double s_radius;
-
-	///	volume fraction of large spheres
-    //  [DEFAULT]=vol_frac_ls= 0.1
-    double vol_frac_ls;
-
-	///	volume fraction of small spheres
-    //  [DEFAULT]=vol_frac_ss= 0.2
-    double vol_frac_ss;
-
-	///	large sphere scattering length density [1/Å²]
-    //  [DEFAULT]=ls_sld= 3.5e-6 [1/A²]
-    double ls_sld;
-
-	///	lsmall sphere scattering length density [1/Å²]
-    //  [DEFAULT]=ss_sld= 5e-7 [1/A²]
-    double ss_sld;
-
-    ///	solvent scattering length density [1/Å²]
-    //  [DEFAULT]=solvent_sld= 6.36e-6 [1/A²]
-    double solvent_sld;
-
-	/// Incoherent Background [1/cm]
-	//  [DEFAULT]=background=0.001 [1/cm]
-	double background;
-
-} BinaryHSParameters;
-
-
-
-/// 1D scattering function
-double binaryHS_analytical_1D(BinaryHSParameters *pars, double q);
-
-/// 2D scattering function
-double binaryHS_analytical_2D(BinaryHSParameters *pars, double q, double phi);
-double binaryHS_analytical_2DXY(BinaryHSParameters *pars, double qx, double qy);
-
-#endif
