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-rw-r--r--include/util/time.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/util/time.h b/include/util/time.h
index d4b5cca7..6b35ef5f 100644
--- a/include/util/time.h
+++ b/include/util/time.h
@@ -13,4 +13,10 @@ uint32_t get_current_time_msec(void);
*/
int64_t timespec_to_msec(const struct timespec *a);
+/**
+ * Subtracts timespec `b` from timespec `a`, and stores the difference in `r`.
+ */
+void timespec_sub(struct timespec *r, const struct timespec *a,
+ const struct timespec *b);
+
#endif