+/*
+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
#include "data/case.h"
#include "data/data-in.h"
#include "data/data-out.h"
+#include "data/dataset.h"
#include "data/dictionary.h"
-#include "data/procedure.h"
#include "data/settings.h"
#include "data/value.h"
#include "data/variable.h"
#include "data/vector.h"
#include "language/expressions/public.h"
+#include "libpspp/assertion.h"
#include "libpspp/compiler.h"
#include "libpspp/i18n.h"
#include "libpspp/message.h"
#include "libpspp/misc.h"
#include "libpspp/str.h"
+#include "math/distributions.h"
#include "math/moments.h"
#include "math/random.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
+struct expr_node;
+
static inline double check_errno (double x)
{
return errno == 0 ? x : SYSMIS;
int compare_string_3way (const struct substring *, const struct substring *);
-double expr_ymd_to_date (double year, double month, double day);
-double expr_ymd_to_ofs (double year, double month, double day);
-double expr_wkyr_to_date (double wk, double yr);
-double expr_yrday_to_date (double yr, double day);
-double expr_yrmoda (double year, double month, double day);
+double expr_ymd_to_date (int year, int month, int day,
+ const struct expression *, const struct expr_node *,
+ int ya, int ma, int da);
+double expr_ymd_to_ofs (int y, int m, int d,
+ const struct expression *, const struct expr_node *,
+ int ya, int ma, int da);
double expr_date_difference (double date1, double date2,
- struct substring unit);
+ struct substring unit, const struct expression *,
+ const struct expr_node *);
double expr_date_sum (double date, double quantity, struct substring unit_name,
- struct substring method_name);
+ struct substring method_name,
+ const struct expression *, const struct expr_node *);
+double expr_date_sum_closest (double date, double quantity,
+ struct substring unit_name,
+ const struct expression *,
+ const struct expr_node *);
struct substring alloc_string (struct expression *, size_t length);
struct substring copy_string (struct expression *,
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 round_nearest (double x, double mult, double fuzzbits);
+double round_zero (double x, double mult, double fuzzbits);
+
+struct substring replace_string (struct expression *,
+ struct substring haystack,
+ struct substring needle,
+ struct substring replacement,
+ int n);
-double cdf_bvnor (double x0, double x1, double r);
+double median (double *, size_t n);
-double idf_fdist (double P, double a, double b);
+const struct variable *expr_index_vector (const struct expression *,
+ const struct expr_node *,
+ const struct vector *, double idx);
#endif /* expressions/helpers.h */