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-rw-r--r--include/time.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/time.h b/include/time.h
index 5a95be5a4e..795eb5f504 100644
--- a/include/time.h
+++ b/include/time.h
@@ -95,6 +95,7 @@ extern char * __strptime_internal (const char *rp, const char *fmt,
 				   int era_cnt, __locale_t loc)
      internal_function;
 
+extern double __difftime (time_t time1, time_t time0);
 
 
 /* Use in the clock_* functions.  Size of the field representing the