initial cmath code and minor libm.h update

[libm] / src / cmath / ccos.c

diff --git a/src/cmath/ccos.c b/src/cmath/ccos.c
new file mode 100644 (file)
index 0000000..9757e6a
--- /dev/null
+++ b/src/cmath/ccos.c
@@ -0,0 +1,6 @@
+#include "libm.h"
+
+double complex ccos(double complex z)
+{
+       return ccosh(cpack(-cimag(z), creal(z)));
+}