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-rw-r--r--lib/ur/basis.urs4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs
index 45a17eb1..c1ee28b3 100644
--- a/lib/ur/basis.urs
+++ b/lib/ur/basis.urs
@@ -160,6 +160,10 @@ val sin : float -> float
val cos : float -> float
val log : float -> float
val exp : float -> float
+val asin : float -> float
+val acos : float -> float
+val atan : float -> float
+val atan2 : float -> float -> float
(** * Time *)