distributions: New module for probability distribution functions.

[pspp] / src / language / expressions / helpers.h

diff --git a/src/language/expressions/helpers.h b/src/language/expressions/helpers.h
index 8646233b66814338c57def027912d5d718243038..1bd0ac8cb87dae0ab7c39bf357dc741e8ce10418 100644 (file)
--- a/src/language/expressions/helpers.h
+++ b/src/language/expressions/helpers.h
@@ -1,3 +1,21 @@
+/*
+PSPP - a program for statistical analysis.
+Copyright (C) 2017 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 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, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef EXPRESSIONS_HELPERS_H
 #define EXPRESSIONS_HELPERS_H
 
@@ -26,6 +44,7 @@
 #include "libpspp/message.h"
 #include "libpspp/misc.h"
 #include "libpspp/str.h"
+#include "math/distributions.h"
 #include "math/moments.h"
 #include "math/random.h"
 
@@ -73,14 +92,6 @@ is_valid (double d)
 
 size_t count_valid (double *, size_t);
 
-double idf_beta (double P, double a, double b);
-double ncdf_beta (double x, double a, double b, double lambda);
-double npdf_beta (double x, double a, double b, double lambda);
-
-double cdf_bvnor (double x0, double x1, double r);
-
-double idf_fdist (double P, double a, double b);
-
 double round_nearest (double x, double mult, double fuzzbits);
 double round_zero (double x, double mult, double fuzzbits);