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-rw-r--r--src/complex/cacos.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/complex/cacos.c b/src/complex/cacos.c
index c39d257b..3d97fb80 100644
--- a/src/complex/cacos.c
+++ b/src/complex/cacos.c
@@ -9,3 +9,11 @@ double complex cacos(double complex z)
z = casin(z);
return CMPLX(M_PI_2 - creal(z), -cimag(z));
}
+
+
+#ifdef TEST
+int
+main(void) {
+ return 0;
+}
+#endif