X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Finteraction.c;h=7ed36f6627ed469ce1c6775efd504a191c23f338;hb=b5c82cc9aabe7e641011130240ae1b2e84348e23;hp=be3d3edb576bad70a4b15d9c6a8a8b27fde5d0a6;hpb=5715e8846c6e3a8dd539b2dc9c9c65640f84af76;p=pspp-builds.git
diff --git a/src/math/interaction.c b/src/math/interaction.c
index be3d3edb..7ed36f66 100644
--- a/src/math/interaction.c
+++ b/src/math/interaction.c
@@ -1,22 +1,18 @@
-/* PSPP - Creates data structures to store interactions for
- statistical routines.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2009 Free Software Foundation, Inc.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see . */
/*
An interaction is a gsl_vector containing a "product" of other
@@ -28,76 +24,258 @@
OBS_VALS member. If there are K categorical variables, each with
N_1, N_2, ..., N_K categories, then the interaction will have
N_1 * N_2 * N_3 *...* N_K - 1 entries.
+
+ When using these functions, make sure the orders of variables and
+ values match when appropriate.
*/
+
+#include
#include
-#include
#include
#include
-#include
+#include
#include
+#include