diff --git a/LibM/math.cpp b/LibM/math.cpp
index 6041c84a56..41e6190784 100644
--- a/LibM/math.cpp
+++ b/LibM/math.cpp
@@ -20,4 +20,10 @@ double pow(double x, double y)
     assert(false);
 }
 
+double ldexp(double, int exp)
+{
+    (void)exp;
+    assert(false);
+}
+
 }