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-rw-r--r--src/complex/ctanf.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/complex/ctanf.c b/src/complex/ctanf.c
new file mode 100644
index 00000000..9bbeb051
--- /dev/null
+++ b/src/complex/ctanf.c
@@ -0,0 +1,7 @@
+#include "libm.h"
+
+float complex ctanf(float complex z)
+{
+ z = ctanhf(cpackf(-cimagf(z), crealf(z)));
+ return cpackf(cimagf(z), -crealf(z));
+}