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diff --git a/lib/msun/src/s_significandf.c b/lib/msun/src/s_significandf.c
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+/* s_significandf.c -- float version of s_significand.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * 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_significandf.c,v 1.1 1994/08/10 20:33:07 jtc Exp $";
+#endif
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+ float significandf(float x)
+#else
+ float significandf(x)
+ float x;
+#endif
+{
+ return __ieee754_scalbf(x,(float) -ilogbf(x));
+}
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