Split the contributed code from libc/stdtime from lib/libc/stdtime

to contrib/tzcode/stdtime.

1 files changed, 0 insertions, 69 deletions

diff --git a/lib/libc/stdtime/difftime.c b/lib/libc/stdtime/difftime.c
deleted file mode 100644
index d16f9a0..0000000
--- a/lib/libc/stdtime/difftime.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifndef NOID
-static char	elsieid[] __unused = "@(#)difftime.c	8.1";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-__FBSDID("$FreeBSD$");
-
-/*LINTLIBRARY*/
-
-#include "namespace.h"
-#include "private.h"	/* for time_t, TYPE_INTEGRAL, and TYPE_SIGNED */
-#include "un-namespace.h"
-
-double
-difftime(time1, time0)
-const time_t	time1;
-const time_t	time0;
-{
-	/*
-	** If (sizeof (double) > sizeof (time_t)) simply convert and subtract
-	** (assuming that the larger type has more precision).
-	** This is the common real-world case circa 2004.
-	*/
-	if (sizeof (double) > sizeof (time_t))
-		return (double) time1 - (double) time0;
-	if (!TYPE_INTEGRAL(time_t)) {
-		/*
-		** time_t is floating.
-		*/
-		return time1 - time0;
-	}
-	if (!TYPE_SIGNED(time_t)) {
-		/*
-		** time_t is integral and unsigned.
-		** The difference of two unsigned values can't overflow
-		** if the minuend is greater than or equal to the subtrahend.
-		*/
-		if (time1 >= time0)
-			return time1 - time0;
-		else	return -((double) (time0 - time1));
-	}
-	/*
-	** time_t is integral and signed.
-	** Handle cases where both time1 and time0 have the same sign
-	** (meaning that their difference cannot overflow).
-	*/
-	if ((time1 < 0) == (time0 < 0))
-		return time1 - time0;
-	/*
-	** time1 and time0 have opposite signs.
-	** Punt if unsigned long is too narrow.
-	*/
-	if (sizeof (unsigned long) < sizeof (time_t))
-		return (double) time1 - (double) time0;
-	/*
-	** Stay calm...decent optimizers will eliminate the complexity below.
-	*/
-	if (time1 >= 0 /* && time0 < 0 */)
-		return (unsigned long) time1 +
-			(unsigned long) (-(time0 + 1)) + 1;
-	return -(double) ((unsigned long) time0 +
-		(unsigned long) (-(time1 + 1)) + 1);
-}