2000-12-04 Joel Sherrill <joel@OARcorp.com>

        * libc/include/sys/time.h: Added BSD timer manipulation macros
        used by RTEMS code.

1 files changed, 32 insertions, 0 deletions

diff --git a/newlib/libc/include/sys/time.h b/newlib/libc/include/sys/time.h
index ff0963676..881998382 100644
--- a/newlib/libc/include/sys/time.h
+++ b/newlib/libc/include/sys/time.h
@@ -38,6 +38,38 @@ struct  itimerval {
   struct  timeval it_value;
 };
 
+/* BSD time macros used by RTEMS code */
+#if defined(__rtems__)
+
+/* Convenience macros for operations on timevals.
+   NOTE: `timercmp' does not work for >= or <=.  */
+#define	timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
+#define	timerclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
+#define	timercmp(a, b, CMP) 						      \
+  (((a)->tv_sec == (b)->tv_sec) ? 					      \
+   ((a)->tv_usec CMP (b)->tv_usec) : 					      \
+   ((a)->tv_sec CMP (b)->tv_sec))
+#define	timeradd(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;			      \
+    if ((result)->tv_usec >= 1000000)					      \
+      {									      \
+	++(result)->tv_sec;						      \
+	(result)->tv_usec -= 1000000;					      \
+      }									      \
+  } while (0)
+#define	timersub(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;			      \
+    if ((result)->tv_usec < 0) {					      \
+      --(result)->tv_sec;						      \
+      (result)->tv_usec += 1000000;					      \
+    }									      \
+  } while (0)
+#endif
+
 int _EXFUN(gettimeofday, (struct timeval *__p, struct timezone *__z));
 int _EXFUN(settimeofday, (const struct timeval *, const struct timezone *));
 int _EXFUN(utimes, (const char *__path, struct timeval *__tvp));