libbsd: add strtonum(), nitems(), timespec operation functions from FreeBSD

Change-Id: I56b677b382d17a27d243b615de19bec10f3a2810 Reviewed-on: https://review.haiku-os.org/c/haiku/+/7426 Tested-by: Commit checker robot <[email protected]> Reviewed-by: waddlesplash <[email protected]>
2024-02-26 14:06:29 +00:00
parent b8caef6915
commit 01dc1ea4cf
5 changed files with 98 additions and 0 deletions
@@ -27,6 +27,9 @@ uint32_t	arc4random_uniform(uint32_t upper_bound);

 int			mkstemps(char *templat, int slen);

+long long	strtonum(const char *numstr, long long minval,
+				long long maxval, const char **errstrp);
+
 #ifdef __cplusplus
 }
 #endif
@@ -37,6 +37,8 @@

 #define NBBY 8

+#define nitems(x)	(sizeof((x)) / sizeof((x)[0]))
+

 #endif

@@ -13,6 +13,33 @@
 #ifdef _DEFAULT_SOURCE


+/* BSDish macros operating on timespec structs */
+#define	timespecadd(a, b, res)							\
+	do {												\
+		(res)->tv_sec = (a)->tv_sec + (b)->tv_sec;		\
+		(res)->tv_nsec = (a)->tv_nsec + (b)->tv_nsec;	\
+		if ((res)->tv_nsec >= 1000000000L) {			\
+			(res)->tv_nsec -= 1000000000L;				\
+			(res)->tv_sec++;							\
+		}												\
+	} while (0)
+#define	timespecsub(a, b, res)							\
+	do {												\
+		(res)->tv_sec = (a)->tv_sec - (b)->tv_sec;		\
+		(res)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec;	\
+		if ((res)->tv_nsec < 0) {						\
+			(res)->tv_nsec += 1000000000L;				\
+			(res)->tv_sec--;							\
+		}												\
+	} while (0)
+#define	timespecclear(a)	((a)->tv_sec = (a)->tv_nsec = 0)
+#define	timespecisset(a)	((a)->tv_sec != 0 || (a)->tv_nsec != 0)
+#define	timespeccmp(a, b, cmp)	(((a)->tv_sec == (b)->tv_sec) \
+	? (a)->tv_nsec cmp (b)->tv_nsec : (a)->tv_sec cmp (b)->tv_sec))
+#define	timespecvalid_interval(a)	((a)->tv_sec >= 0	\
+	&& (a)->tv_nsec >= 0 && (&)->tv_nsec < 1000000000L)
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif