math: Avoid unneeded extra allocations for fixed-size data structures.

[pspp] / src / math / percentiles.h

diff --git a/src/math/percentiles.h b/src/math/percentiles.h
index 0dd09820945e1bafaee5a017ba3756cb4197783b..86fd641addd46d5e6c3c955e547421a04649cf65 100644 (file)
--- a/src/math/percentiles.h
+++ b/src/math/percentiles.h
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2004, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2008, 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
@@ -31,9 +31,6 @@ enum pc_alg {
   PC_AEMPIRICAL
 } ;
 
-extern  const char *const ptile_alg_desc[];
-
-
 struct percentile
 {
   struct order_stats parent;
@@ -47,12 +44,14 @@ struct percentile
 
   double g2;
   double g2_star;
+
+  struct k k[2];
 };
 
 /* Create the Pth percentile.
    W is the total sum of weights in the data set
 */
-struct order_stats *percentile_create (double p, double W);
+struct percentile *percentile_create (double p, double W);
 
 /* Return the value of the percentile */
 double percentile_calculate (const struct percentile *ptl, enum pc_alg alg);