1 files changed, 25 insertions, 0 deletions
diff --git a/src/complex/catan.c b/src/complex/catan.c
new file mode 100644
index 00000000..6c162c3f
--- /dev/null
+++ b/src/complex/catan.c
@@ -0,0 +1,25 @@
+# define TGSOURCE "catan.c"
+#include "nonstd/tgmath.h"
+
+#include <complex.h>
+
+TYPE complex TGFN(catan)(TYPE complex z)
+{
+	return 0.0;
+}
+
+/*d
+The catan functions compute the complex arc tangent of z, with branch cuts outside the
+interval [−i, +i] along the imaginary axis.
+d*/
+
+/*r
+The catan functions return the complex arc tangent value, in the range of a strip
+mathematically unbounded along the imaginary axis and in the interval [− π /2, + π /2]
+along the real axis.
+r*/
+
+/*
+STDC(199901)
+LINK(m)
+*/