/* PSPP - a program for statistical analysis.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009 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
#include <math/merge.h>
-#include <data/case-ordering.h>
#include <data/case.h>
#include <data/casereader.h>
#include <data/casewriter.h>
+#include <data/subcase.h>
#include <libpspp/array.h>
#include <libpspp/assertion.h>
#include <libpspp/taint.h>
struct merge_input
{
struct casereader *reader;
- struct ccase c;
+ struct ccase *c;
};
struct merge
{
- struct case_ordering *ordering;
+ struct subcase ordering;
struct merge_input inputs[MAX_MERGE_ORDER];
size_t input_cnt;
size_t value_cnt;
static void do_merge (struct merge *m);
struct merge *
-merge_create (const struct case_ordering *ordering, size_t value_cnt)
+merge_create (const struct subcase *ordering, size_t value_cnt)
{
struct merge *m = xmalloc (sizeof *m);
- m->ordering = case_ordering_clone (ordering);
+ subcase_clone (&m->ordering, ordering);
m->input_cnt = 0;
m->value_cnt = value_cnt;
return m;
{
size_t i;
- case_ordering_destroy (m->ordering);
+ subcase_destroy (&m->ordering);
for (i = 0; i < m->input_cnt; i++)
casereader_destroy (m->inputs[i].reader);
free (m);
{
struct merge_input *i = &m->inputs[idx];
- if (casereader_read (i->reader, &i->c))
+ i->c = casereader_read (i->reader);
+ if (i->c)
return true;
else
{
min = 0;
for (i = 1; i < m->input_cnt; i++)
- if (case_ordering_compare_cases (&m->inputs[i].c, &m->inputs[min].c,
- m->ordering) < 0)
+ if (subcase_compare_3way (&m->ordering, m->inputs[i].c,
+ &m->ordering, m->inputs[min].c) < 0)
min = i;
- casewriter_write (w, &m->inputs[min].c);
+ casewriter_write (w, m->inputs[min].c);
read_input_case (m, min);
}