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authorThe Android Open Source Project <initial-contribution@android.com>2008-10-21 07:00:00 -0700
committerThe Android Open Source Project <initial-contribution@android.com>2008-10-21 07:00:00 -0700
commit8771baa10b2dc5bbedb08231d99c72cfd6abcb5b (patch)
tree87dbea36a0e5ed0f2f8e2a499b9c1014af6a38b5 /s_ldexp.c
downloadfdlibm-8771baa10b2dc5bbedb08231d99c72cfd6abcb5b.tar.gz
Diffstat (limited to 's_ldexp.c')
-rw-r--r--s_ldexp.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/s_ldexp.c b/s_ldexp.c
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+
+/* @(#)s_ldexp.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.
+ * ====================================================
+ */
+
+#include "fdlibm.h"
+#include <errno.h>
+
+#ifdef __STDC__
+ double ieee_ldexp(double value, int exp)
+#else
+ double ieee_ldexp(value, exp)
+ double value; int exp;
+#endif
+{
+ if(!ieee_finite(value)||value==0.0) return value;
+ value = ieee_scalbn(value,exp);
+ if(!ieee_finite(value)||value==0.0) errno = ERANGE;
+ return value;
+}