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  * Add new type SUINT32, as a shorter version of UINT32 for systems that
    do not have a proper uint32_t type. SUINT32 is defined by default to
    be UINT32, but during compilation the user can define an environment
    variable SUINT32 to be, say, unsigned long, and that will make SUINT32
    to take that type. This, and the source codem, are the only places
    where this is documented. Work in collaboration with professor Martin
    Trusler.

1 files changed, 4 insertions, 1 deletions

diff --git a/pith/adrbklib.h b/pith/adrbklib.h
index b128ca7b..1cc74029 100644
--- a/pith/adrbklib.h
+++ b/pith/adrbklib.h
@@ -118,9 +118,12 @@
  * an unsigned long, too. If it is an unsigned int, then a_c_arg_t could
  * be an unsigned int, too. However, if we just make it unsigned long, then
  * it will be the same in all cases and big enough in all cases.
+ * For most people SUINT32 is UINT32, but users can define at configure stage
+ * that SUINT32 could be something different, by means of defining an environment
+ * variable SUINT32 as, say, unsigned long.
  */
 
-#define adrbk_cntr_t UINT32  /* addrbook counter type                */
+#define adrbk_cntr_t SUINT32  /* addrbook counter type                */
 typedef unsigned long a_c_arg_t;     /* type of arg passed for adrbk_cntr_t  */
 #define NO_NEXT ((adrbk_cntr_t)-1)
 #define MAX_ADRBK_SIZE (2000000000L) /* leave room for extra display lines   */