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-rw-r--r--lib/libm/ctan.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/libm/ctan.c b/lib/libm/ctan.c
index 2bc6156c..b06e60a6 100644
--- a/lib/libm/ctan.c
+++ b/lib/libm/ctan.c
@@ -1,4 +1,7 @@
-#include "__complex.h"
+#include "__complex.h" // for redupi, MACHEP
+
+#include <complex.h> // for cimag, creal, complex, I, ctan
+#include <math.h> // for fabs, HUGE_VAL, cos, cosh, sin, sinh
double _ctans(double complex z)
{