1 files changed, 9 insertions, 0 deletions
diff --git a/lib/libm/cacosf.c b/lib/libm/cacosf.c
new file mode 100644
index 00000000..f44f0067
--- /dev/null
+++ b/lib/libm/cacosf.c
@@ -0,0 +1,9 @@
+#include <math.h>
+#include <complex.h>
+
+float complex cacosf(float complex z)
+{
+	float complex w = casinf(z);
+
+	return ((float)M_PI_2 - crealf(w)) - cimagf(w) * I;
+}