X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Flevene.c;h=5ff474dc4ed5c0c39088a2d1a0affabf676835ce;hb=608b1765241e7c6f9bd5e86a8f81cf15edeb413b;hp=7bd582105f940c28ffeb26506d4c5fe941ff728d;hpb=8953baa61127d6d3b91f763663ea647bf3e4e793;p=pspp

diff --git a/src/math/levene.c b/src/math/levene.c
index 7bd582105f..5ff474dc4e 100644
--- a/src/math/levene.c
+++ b/src/math/levene.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2004, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009, 2010 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
@@ -164,7 +164,7 @@ levene_precalc (const struct levene_info *l)
 
 
       for ( gs = hsh_first(gp->group_hash, &hi);
-	    gs != 0;
+	    gs != NULL;
 	    gs = hsh_next(gp->group_hash, &hi))
 	{
 	  gs->lz_total = 0;
@@ -196,7 +196,7 @@ levene_calc (const struct dictionary *dict, const struct ccase *c,
 
       gs = hsh_find(gp->group_hash,(void *) &key );
 
-      if ( 0 == gs )
+      if ( gs == NULL )
 	continue ;
 
       if ( !var_is_value_missing (var, v, l->exclude))
@@ -246,9 +246,7 @@ levene2_precalc (struct levene_info *l)
       struct hsh_table *hash = group_proc_get (var)->group_hash;
 
 
-      for(g = (struct group_statistics *) hsh_first(hash,&hi);
-	  g != 0 ;
-	  g = (struct group_statistics *) hsh_next(hash,&hi) )
+      for (g = hsh_first(hash,&hi); g != NULL; g = hsh_next(hash, &hi))
 	{
 	  g->lz_mean = g->lz_total / g->n ;
 	}
@@ -279,7 +277,7 @@ levene2_calc (const struct dictionary *dict, const struct ccase *c,
 
       gs = hsh_find(group_proc_get (var)->group_hash,(void *) &key );
 
-      if ( 0 == gs )
+      if ( gs == NULL )
 	continue;
 
       if ( !var_is_value_missing (var, v, l->exclude))
@@ -308,9 +306,7 @@ levene2_postcalc (struct levene_info *l)
       struct group_proc *gp = group_proc_get (var);
       struct hsh_table *hash = gp->group_hash;
 
-      for(g = (struct group_statistics *) hsh_first(hash,&hi);
-	  g != 0 ;
-	  g = (struct group_statistics *) hsh_next(hash,&hi) )
+      for (g = hsh_first(hash, &hi); g != NULL; g = hsh_next(hash, &hi))
 	{
 	  lz_numerator += g->n * pow2(g->lz_mean - l->lz[v].grand_mean );
 	}