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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/generic/e_scalbl.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'sysdeps/generic/e_scalbl.c')
-rw-r--r--sysdeps/generic/e_scalbl.c63
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diff --git a/sysdeps/generic/e_scalbl.c b/sysdeps/generic/e_scalbl.c
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+/* e_scalbl.c -- long double version of s_scalb.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@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.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * __ieee754_scalbl(x, fn) is provide for
+ * passing various standard test suite. One
+ * should use scalbnl() instead.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef _SCALB_INT
+#ifdef __STDC__
+ long double __ieee754_scalbl(long double x, int fn)
+#else
+ long double __ieee754_scalbl(x,fn)
+ long double x; int fn;
+#endif
+#else
+#ifdef __STDC__
+ long double __ieee754_scalbl(long double x, long double fn)
+#else
+ long double __ieee754_scalbl(x,fn)
+ long double x, fn;
+#endif
+#endif
+{
+#ifdef _SCALB_INT
+ return __scalbnl(x,fn);
+#else
+ if (__isnanl(x)||__isnanl(fn)) return x*fn;
+ if (!__finitel(fn)) {
+ if(fn>0.0) return x*fn;
+ else if (x == 0)
+ return x;
+ else if (!__finitel (x))
+ return __nanl ("");
+ else return x/(-fn);
+ }
+ if (__rintl(fn)!=fn) return __nanl ("");
+ if ( fn > 65000.0) return __scalbnl(x, 65000);
+ if (-fn > 65000.0) return __scalbnl(x,-65000);
+ return __scalbnl(x,(int)fn);
+#endif
+}