Hide a macro that doesn't need to be exposed.

1 files changed, 14 insertions, 0 deletions

diff --git a/ppsthread.h b/ppsthread.h
index 73c8720b..4178813b 100644
--- a/ppsthread.h
+++ b/ppsthread.h
@@ -22,6 +22,20 @@
 #endif
 #endif /* S_SPLINT_S */
 
+#ifndef TIMEDELTA_DEFINED
+#define TIMEDELTA_DEFINED
+struct timedelta_t {
+    struct timespec	real;
+    struct timespec	clock;
+};
+#endif /* TIMEDELTA_DEFINED */
+
+
+/* difference between timespecs in nanoseconds */
+/* int is too small, avoid floats  */
+/* WARNING!  this will overflow if x and y differ by more than a few seconds */
+#define timespec_diff_ns(x, y)	(long)(((x).tv_sec-(y).tv_sec)*1000000000+(x).tv_nsec-(y).tv_nsec)
+
 struct pps_thread_t {
     struct timespec fixin_real;		/* in-band time of the fix */
     struct timespec fixin_clock;	/* system clock time when fix received */