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-rw-r--r--lib/libm/creal.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libm/creal.c b/lib/libm/creal.c
index 03ec4c28..109a40bb 100644
--- a/lib/libm/creal.c
+++ b/lib/libm/creal.c
@@ -1,4 +1,6 @@
-#include "__complex.h"
+#include "__complex.h" // for REAL_PART, double_complex
+
+#include <complex.h> // for creal, complex
double creal(double complex z)
{