Here's the revised, commented source,
and the NMOBJ file is at
http://www.allegro.com/foo.html
Stan.
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#pragma intrinsic HPGETPROCPLABEL
#include <stdlib.h>
/* Never use "int" or "short int" when using intrinsics */
/* (and not in many other cases either!). */
/* Instead, carefully define the exact size you want ...*/
/* particularly when you are trying to match preexisting*/
/* sizes (like intrinsic results/parameters). */
typedef int int32;
typedef short int int16;
typedef unsigned short int uint16;
extern uint16 subDate ();
/****************************************************************/
uint16 CALENDAR (void)
{
struct hpe_status {
int16 info;
int16 subsys;
};
char
firstfile [40],
procname [20];
long int
pcasesensitive; /* probably should be char (8-bit) */
static long int
procs_loaded = 0L;
static uint16
(*pcalendar)() = 0; /* CALENDAR */
struct hpe_status
pstatus;
/* First time through, load CALENDAR... */
if (procs_loaded == 0L)
{
strcpy ( procname, " CALENDAR \n");
strcpy ( firstfile, "-XL.PUB.SYS- \0 ");
pcasesensitive = -1L;
HPGETPROCPLABEL (
&procname,
(void (**) ()) &pcalendar ,
&pstatus, &firstfile, pcasesensitive);
procs_loaded = -1L;
if (pstatus.info < 0)
{
printf ("*E* HPGETPROCPLABEL failed while loading \n");
printf (" Status Codes : %d, \n ", pstatus.info);
procs_loaded = 0L;
/* consider *NOT* setting procs_loaded to 0 above */
/* Instead, try setting to -2. This will cause */
/* the code to do a return of 0 for calls after */
/* a failed load attempt. */
/* With current code, if a load fails, */
/* subsequent attempts will probably fail *and* */
/* will generate the annoying 2-line message */
/* every time! */
};
};
/* If CALENDAR loaded, call it ... */
/* If result from CALENDAR is >= 2000-01-01, effectively */
/* sort of .. kind of ... reduce it. 51200 happens */
/* to be the CALENDAR equivalent of 2000-00-00. */
/* for values in the range 2000-01-01 .. 2027-12-31, */
/* the "mod" below will ROUGHLY reduce them to 1900-01-01 */
/* ..1927-12-31. Note that most dates in 2000 will *NOT* */
/* be reduced to the same mm/dd values in 1900 (because */
/* 2000 is a leap year and 1900 is not).
if (procs_loaded == -1L)
return (((*pcalendar) ()) % 51200); /* "mod 2000" */
/* if not loaded, return 0 ... */
return (0);
} /* end CALENDAR proc */
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