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-rw-r--r--lib/msun/src/s_ldexp.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/msun/src/s_ldexp.c b/lib/msun/src/s_ldexp.c
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+++ b/lib/msun/src/s_ldexp.c
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+/* @(#)s_ldexp.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_ldexp.c,v 1.1.1.1 1994/05/06 00:20:05 gclarkii Exp $";
+#endif
+
+#include "math.h"
+#include <errno.h>
+
+#ifdef __STDC__
+ double ldexp(double value, int exp)
+#else
+ double ldexp(value, exp)
+ double value; int exp;
+#endif
+{
+ if(!finite(value)||value==0.0) return value;
+ value = scalbn(value,exp);
+ if(!finite(value)||value==0.0) errno = ERANGE;
+ return value;
+}