Add details on how various features interact.

[pspp] / src / var.h

diff --git a/src/var.h b/src/var.h
index bf2e4d5082c7c27af2151508e8d3553f68956366..60298513c4c61fc3c127cd799aa984944deb8b7e 100644 (file)
--- a/src/var.h
+++ b/src/var.h
@@ -405,6 +405,7 @@ void cancel_temporary (void);
 /* Functions. */
 
 void dump_split_vars (const struct ccase *);
+typedef int (* is_missing_func )(const union value *, const struct variable *);
 
 int is_num_user_missing (double, const struct variable *);
 int is_str_user_missing (const unsigned char[], const struct variable *);
@@ -415,17 +416,16 @@ void copy_missing_values (struct variable *dest, const struct variable *src);
 \f
 /* Transformations. */
 
+struct trns_header;
+typedef int trns_proc_func (struct trns_header *, struct ccase *, int);
+typedef void trns_free_func (struct trns_header *);
+
 /* Header for all transformations. */
 struct trns_header
   {
-    /* Index into t_trns[]. */
-    int index;
-
-    /* Transformation proc. */
-    int (*proc) (struct trns_header *, struct ccase *);
-
-    /* Garbage collector proc. */
-    void (*free) (struct trns_header *);
+    int index;                  /* Index into t_trns[]. */
+    trns_proc_func *proc;       /* Transformation proc. */
+    trns_free_func *free;       /* Garbage collector proc. */
   };
 
 /* Array of transformations */