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-rw-r--r--js/public/Date.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/js/public/Date.h b/js/public/Date.h
index cba0ea875..cab36a3de 100644
--- a/js/public/Date.h
+++ b/js/public/Date.h
@@ -134,6 +134,14 @@ NewDateObject(JSContext* cx, ClippedTime time);
JS_PUBLIC_API(double)
MakeDate(double year, unsigned month, unsigned day);
+// Year is a year, month is 0-11, day is 1-based, and time is in milliseconds.
+// The return value is a number of milliseconds since the epoch.
+//
+// Consistent with the MakeDate algorithm defined in ECMAScript, this value is
+// *not* clipped! Use JS::TimeClip if you need a clipped date.
+JS_PUBLIC_API(double)
+MakeDate(double year, unsigned month, unsigned day, double time);
+
// Takes an integer number of milliseconds since the epoch and returns the
// year. Can return NaN, and will do so if NaN is passed in.
JS_PUBLIC_API(double)