1 files changed, 6 insertions, 0 deletions
diff --git a/lib/libm/catanhl.c b/lib/libm/catanhl.c
new file mode 100644
index 00000000..1fd4275b
--- /dev/null
+++ b/lib/libm/catanhl.c
@@ -0,0 +1,6 @@
+#include <complex.h>
+
+long double complex catanhl(long double complex z)
+{
+	return -I * catanl(z * I);
+}