X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fcoefficient.h;h=7f11e8f1f2c54e3147c237f872762dbca5935c2b;hb=597402f4808b749094b3f90a96d96adf67e41c5b;hp=5c9b61d174653ccb7fd2beca620cf90c0759d198;hpb=945fd370f9fb880b310fb88f868ad47c2ae84533;p=pspp-builds.git

diff --git a/src/math/coefficient.h b/src/math/coefficient.h
index 5c9b61d1..7f11e8f1 100644
--- a/src/math/coefficient.h
+++ b/src/math/coefficient.h
@@ -27,6 +27,16 @@
 #include <src/data/variable.h>
 #include <src/data/value.h>
 
+/*
+  This file contains definitions of data structures for storing
+  coefficients of a statistical model. The coefficients are the point
+  in the model where the theoretical aspects of the model meet the
+  data. As such, the coefficients are the interface where users need
+  to match variable names and values with any information about the
+  model itself. This file and coefficient.c provide this interface
+  between data and model structures.
+ */
+
 struct design_matrix;
 
 /*
@@ -54,7 +64,7 @@ struct pspp_coeff
 				   interaction terms will have more than one
 				   variable. */
 };
-
+typedef struct pspp_coeff coefficient;
 
 void pspp_coeff_free (struct pspp_coeff *);