auto import from //depot/cupcake/@135843
diff --git a/w_acos.c b/w_acos.c
new file mode 100644
index 0000000..1233f9d
--- /dev/null
+++ b/w_acos.c
@@ -0,0 +1,39 @@
+
+/* @(#)w_acos.c 1.3 95/01/18 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+ * wrap_acos(x)
+ */
+
+#include "fdlibm.h"
+
+
+#ifdef __STDC__
+ double ieee_acos(double x) /* wrapper acos */
+#else
+ double ieee_acos(x) /* wrapper acos */
+ double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+ return __ieee754_acos(x);
+#else
+ double z;
+ z = __ieee754_acos(x);
+ if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
+ if(ieee_fabs(x)>1.0) {
+ return __kernel_standard(x,x,1); /* ieee_acos(|x|>1) */
+ } else
+ return z;
+#endif
+}
