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-rw-r--r--src/Chrono.hxx7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/Chrono.hxx b/src/Chrono.hxx
index de5122fd0..db7605726 100644
--- a/src/Chrono.hxx
+++ b/src/Chrono.hxx
@@ -106,6 +106,13 @@ public:
return SignedSongTime(Base::zero());
}
+ /**
+ * Generate a negative value.
+ */
+ static constexpr SignedSongTime Negative() {
+ return SignedSongTime(-1);
+ }
+
static constexpr SignedSongTime FromS(int s) {
return SignedSongTime(rep(s) * 1000);
}