src/math/order-stats.h

   1 /* PSPP - a program for statistical analysis.
   2    Copyright (C) 2004, 2008, 2011 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #ifndef __ORDER_STATS_H__
  18 #define __ORDER_STATS_H__
  19
  20 #include <stddef.h>
  21 #include "data/missing-values.h"
  22 #include "math/statistic.h"
  23
  24 struct casereader;
  25 struct variable;
  26
  27 /*
  28   cc <= tc < cc_p1
  29 */
  30 struct k
  31 {
  32   double tc;
  33   double cc;
  34   double cc_p1;
  35   double c;
  36   double c_p1;
  37   double y;
  38   double y_p1;
  39 };
  40
  41
  42 struct order_stats
  43 {
  44   struct statistic parent;
  45   int n_k;
  46   struct k *k;
  47
  48   double cc;
  49 };
  50
  51 enum mv_class;
  52
  53 void order_stats_dump (const struct order_stats *os);
  54
  55 void
  56 order_stats_accumulate_idx (struct order_stats **os, size_t nos,
  57                             struct casereader *reader,
  58                             int wt_idx,
  59                             int val_idx);
  60
  61
  62 void order_stats_accumulate (struct order_stats **ptl, size_t nos,
  63                              struct casereader *reader,
  64                              const struct variable *wv,
  65                              const struct variable *var,
  66                              enum mv_class exclude);
  67
  68 #endif