* lib/timespec.h (timespec_sign): New inline function.

diff --git a/ChangeLog b/ChangeLog
index e68d6767a0a19640aad24dff2f7fbfd32659a2af..31e04e8a0a9b21103bf08a89268f1934f35717d5 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2011-06-30  Paul Eggert  <eggert@cs.ucla.edu>
 
+       * lib/timespec.h (timespec_sign): New inline function.
+
        pselect: new module
        * lib/sys_select.in.h: Include <signal.h>, for 'sigset_t'.
        (pselect): New decls.

diff --git a/lib/timespec.h b/lib/timespec.h
index 74d5749df60e075bdbec4576691259b6e69372c2..d5b0996b8cfa2d33cd81f6ded459d3c514e501a0 100644 (file)
--- a/lib/timespec.h
+++ b/lib/timespec.h
@@ -57,6 +57,14 @@ timespec_cmp (struct timespec a, struct timespec b)
           : (int) (a.tv_nsec - b.tv_nsec));
 }
 
+/* Return -1, 0, 1, depending on the sign of A.  A.tv_nsec must be
+   nonnegative.  */
+static inline int
+timespec_sign (struct timespec a)
+{
+  return a.tv_sec < 0 ? -1 : a.tv_sec || a.tv_nsec;
+}
+
 void gettime (struct timespec *);
 int settime (struct timespec const *);