1 files changed, 7 insertions, 1 deletions
diff --git a/lib/libalpm/util.h b/lib/libalpm/util.h
index c66e9881..776cee4d 100644
--- a/lib/libalpm/util.h
+++ b/lib/libalpm/util.h
@@ -36,6 +36,8 @@
 #include <time.h>
 #include <sys/stat.h> /* struct stat */
 #include <archive.h> /* struct archive */
+#include <math.h> /* fabs */
+#include <float.h> /* DBL_EPSILON */
 
 #ifdef ENABLE_NLS
 #include <libintl.h> /* here so it doesn't need to be included elsewhere */
@@ -63,7 +65,9 @@
 
 #define RET_ERR(err, ret) do { pm_errno = (err); \
 	_alpm_log(PM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerrorlast()); \
-	return(ret); } while(0)
+	return (ret); } while(0)
+
+#define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON)
 
 /**
  * Used as a buffer/state holder for _alpm_archive_fgets().
@@ -113,6 +117,8 @@ char *strndup(const char *s, size_t n);
 #define SYMEXPORT __attribute__((visibility("default")))
 #define SYMHIDDEN __attribute__((visibility("internal")))
 
+#define UNUSED __attribute__((unused))
+
 #endif /* _ALPM_UTIL_H */
 
 /* vim: set ts=2 sw=2 noet: */