1 files changed, 17 insertions, 0 deletions
diff --git a/src/time/difftime.c b/src/time/difftime.c
new file mode 100644
index 00000000..17bb5c71
--- /dev/null
+++ b/src/time/difftime.c
@@ -0,0 +1,17 @@
+#include <time.h>
+
+/** find difference between two times **/
+
+double difftime(time_t time1, time_t time0)
+{
+	return (double)time1 - (double)time0;
+}
+
+/***
+subtracts ARGUMENT(time0) from ARGUMENT(time1).
+***/
+
+/*
+RETURN_ALWAYS(the difference in seconds)
+STDC(1)
+*/