X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Ftimespec.h;h=d665e6ccf9ae99539ca2ccf1a41144b91ed4d4a7;hb=05c9fb114d40810816df58c1e948ba3c93a4a147;hp=175de7f26326132a3ba7d15eaadd1f4c0c77f2e0;hpb=84ee3b1cd87b3a9161eee3634c529eb835703fba;p=gnulib.git

diff --git a/lib/timespec.h b/lib/timespec.h
index 175de7f26..d665e6ccf 100644
--- a/lib/timespec.h
+++ b/lib/timespec.h
@@ -1,6 +1,6 @@
 /* timespec -- System time interface
 
-   Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2010 Free Software
+   Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2013 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
@@ -21,6 +21,11 @@
 
 # include <time.h>
 
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_TIMESPEC_INLINE
+# define _GL_TIMESPEC_INLINE _GL_INLINE
+#endif
+
 /* Return negative, zero, positive if A < B, A == B, A > B, respectively.
 
    For each time stamp T, this code assumes that either:
@@ -49,7 +54,7 @@
 
    The (int) cast avoids a gcc -Wconversion warning.  */
 
-static inline int
+_GL_TIMESPEC_INLINE int
 timespec_cmp (struct timespec a, struct timespec b)
 {
   return (a.tv_sec < b.tv_sec ? -1
@@ -57,7 +62,31 @@ 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.  */
+_GL_TIMESPEC_INLINE int
+timespec_sign (struct timespec a)
+{
+  return a.tv_sec < 0 ? -1 : a.tv_sec || a.tv_nsec;
+}
+
+struct timespec timespec_add (struct timespec, struct timespec)
+  _GL_ATTRIBUTE_CONST;
+struct timespec timespec_sub (struct timespec, struct timespec)
+  _GL_ATTRIBUTE_CONST;
+struct timespec dtotimespec (double)
+  _GL_ATTRIBUTE_CONST;
+
+/* Return an approximation to A, of type 'double'.  */
+_GL_TIMESPEC_INLINE double
+timespectod (struct timespec a)
+{
+  return a.tv_sec + a.tv_nsec / 1e9;
+}
+
 void gettime (struct timespec *);
 int settime (struct timespec const *);
 
+_GL_INLINE_HEADER_END
+
 #endif