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-rw-r--r--include/complex.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/complex.h b/include/complex.h
index 436f32f4..b4bcb22e 100644
--- a/include/complex.h
+++ b/include/complex.h
@@ -6,7 +6,11 @@ extern "C" {
#endif
#define complex _Complex
+#ifdef __GNUC__
+#define _Complex_I (__extension__ 1.0fi)
+#else
#define _Complex_I 1.0fi
+#endif
#define I _Complex_I
double complex cacos(double complex);