Move checktime() implementation to datewrap.* and always call checktime()

in xptime.

src/xpdev/datewrap.c

@@ -39,6 +39,19 @@
 #include "genwrap.h"
 #include "datewrap.h"
 
+/* Return difference (in seconds) in time() result from standard */
+time_t checktime(void)
+{
+	time_t		t=0x2D24BD00L;	/* Correct time_t value on Jan-1-1994 */
+	struct tm	gmt;
+	struct tm	tm;
+
+	memset(&tm,0,sizeof(tm));
+	tm.tm_year=94;
+	tm.tm_mday=1;
+	return mktime(&tm) - mktime(gmtime_r(&t,&gmt));
+}
+
 /* Compensates for struct tm "weirdness" */
 time_t sane_mktime(struct tm* tm)
 {

src/xpdev/datewrap.h

@@ -44,6 +44,9 @@
 extern "C" {
 #endif
 
+/* Return difference (in seconds) in time() result from standard (0 on success) */
+time_t checktime(void);
+
 /* Implementation of mktime() that handles common tm element conversions for you */
 time_t sane_mktime(struct tm* tm);
 

src/xpdev/xptime.c

@@ -13,16 +13,6 @@
 #include "datewrap.h"
 #include "xpdatetime.h"
 
-time_t checktime()
-{
-	struct tm tm;
-
-	memset(&tm,0,sizeof(tm));
-	tm.tm_year=94;
-	tm.tm_mday=1;
-	return(mktime(&tm)^0x2D24BD00L);
-}
-
 int main(int argc, char **argv)
 {
 	char			str[256];
@@ -39,13 +29,6 @@ int main(int argc, char **argv)
 
 	printf("Rev %s Built " __DATE__ " " __TIME__ " with %s\n\n", revision, str);
 
-#if 0
-
-	if((t=checktime())!=0L) {
-		printf("Time problem (%08lX)\n",t);
-		exit(1); }
-#endif
-
 	if(argc<2)
 		printf("usage: xptime [-z] <date_str || time_t>\n\n");
 
@@ -56,6 +39,9 @@ int main(int argc, char **argv)
 	}
 	tzset();
 
+	if((t=checktime())!=0L)
+		printf("!time() result diverges from standard by: %ld seconds\n\n",t);
+
 	printf("Current timezone: %d\n", xpTimeZone_local());
 	printf("\n");