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-rw-r--r--src/complex/catan.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/complex/catan.c b/src/complex/catan.c
index ccc2fb53..d09a3bc2 100644
--- a/src/complex/catan.c
+++ b/src/complex/catan.c
@@ -105,3 +105,11 @@ double complex catan(double complex z)
w = CMPLX(w, 0.25 * log(a));
return w;
}
+
+
+#ifdef TEST
+int
+main(void) {
+ return 0;
+}
+#endif