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diff --git a/lib/msun/src/s_matherr.c b/lib/msun/src/s_matherr.c
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+++ b/lib/msun/src/s_matherr.c
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+/* @(#)s_matherr.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: s_matherr.c,v 1.1.1.1 1994/05/06 00:20:06 gclarkii Exp $";
+#endif
+
+#include "math.h"
+
+#ifdef __STDC__
+ int matherr(struct exception *x)
+#else
+ int matherr(x)
+ struct exception *x;
+#endif
+{
+ int n=0;
+ if(x->arg1!=x->arg1) return 0;
+ return n;
+}