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-rw-r--r--lib/posixtm.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/posixtm.h b/lib/posixtm.h
index f2bca7943..36ffc016c 100644
--- a/lib/posixtm.h
+++ b/lib/posixtm.h
@@ -1,11 +1,16 @@
+#ifndef POSIXTM_H_
+# define POSIXTM_H_
+
/* POSIX Date Syntax flags. */
-#define PDS_LEADING_YEAR 1
-#define PDS_TRAILING_YEAR 2
-#define PDS_CENTURY 4
-#define PDS_SECONDS 8
+# define PDS_LEADING_YEAR 1
+# define PDS_TRAILING_YEAR 2
+# define PDS_CENTURY 4
+# define PDS_SECONDS 8
time_t
posixtime (const char *s, unsigned int syntax_bits);
struct tm *
posixtm (const char *s, unsigned int syntax_bits);
+
+#endif