1 files changed, 13 insertions, 2 deletions

diff --git a/timer/src/timer.c b/timer/src/timer.c
index 340cd98..d886f59 100644
--- a/timer/src/timer.c
+++ b/timer/src/timer.c
@@ -78,7 +78,7 @@ time_delta sec_to_time_delta(double seconds) {
 #ifdef _WIN32
   return (time_delta)(seconds / seconds_per_count);
 #else
-  return (time_delta)(seconds * nanoseconds);
+  return (time_delta)(seconds * 1.0e9);
 #endif
 }
 
@@ -90,9 +90,20 @@ uint64_t time_point_to_ns(time_point t) {
 #endif
 }
 
+time_point time_add(time_point t, time_delta dt) {
+  time_point out;
+#ifdef _WIN32
+  out = t + dt;
+#else
+  out.tv_sec  = t.tv_sec + (__time_t)(dt / nanoseconds);
+  out.tv_nsec = t.tv_nsec + (__time_t)(dt % nanoseconds);
+#endif
+  return out;
+}
+
 void time_sleep(time_delta dt) {
 #ifdef _WIN32
-  const int64_t ms = dt / microseconds;
+  const uint64_t ms = dt / microseconds;
   Sleep((DWORD)(ms));
 #else
   const uint64_t  sec = dt / nanoseconds;