From e6c9a67a0bdb970f3b7f7ced6581b98cfe35797c Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Fri, 12 Jul 1996 00:43:28 +0000
Subject: * math/Makefile (calls): Add s_frexp, s_ldexp.

	(routines): Remove them and &f from here.

	* sys/socket.h: New file, wrapper for socket/sys/socket.h.

Thu Jul 11 00:22:40 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/s_frexpl.c: New file.  `long double'
	implementation of frexp() function.
	* sysdeps/libm-ieee754/s_ldexpl.c: New file.  `long double'
	implementation of ldexp() function.

	* sysdeps/libm-i387/s_isnanl.c (isnanl): Mask explicit one
	out before or'ing.
---
 sysdeps/libm-ieee754/s_frexpl.c | 69 +++++++++++++++++++++++++++++++++++++++++
 sysdeps/libm-ieee754/s_ldexpl.c | 37 ++++++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100644 sysdeps/libm-ieee754/s_frexpl.c
 create mode 100644 sysdeps/libm-ieee754/s_ldexpl.c

(limited to 'sysdeps/libm-ieee754')

diff --git a/sysdeps/libm-ieee754/s_frexpl.c b/sysdeps/libm-ieee754/s_frexpl.c
new file mode 100644
index 0000000..7a49bc3
--- /dev/null
+++ b/sysdeps/libm-ieee754/s_frexpl.c
@@ -0,0 +1,69 @@
+/* s_frexpl.c -- long double version of s_frexp.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: $";
+#endif
+
+/*
+ * for non-zero x
+ *	x = frexpl(arg,&exp);
+ * return a long double fp quantity x such that 0.5 <= |x| <1.0
+ * and the corresponding binary exponent "exp". That is
+ *	arg = x*2^exp.
+ * If arg is inf, 0.0, or NaN, then frexpl(arg,&exp) returns arg
+ * with *exp=0.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double
+#else
+static long double
+#endif
+#if LDBL_MANT_DIG == 64
+two65 =  3.68934881474191032320e+19L; /* 0x4040, 0x80000000, 0x00000000 */
+#else
+# error "Cannot handle this MANT_DIG"
+#endif
+
+
+#ifdef __STDC__
+	long double __frexpl(long double x, int *eptr)
+#else
+	long double __frexpl(x, eptr)
+	long double x; int *eptr;
+#endif
+{
+	u_int32_t se, hx, ix, lx;
+	GET_LDOUBLE_WORDS(se,hx,lx,x);
+	ix = 0x7fff&se;
+	*eptr = 0;
+	if(ix==0x7fff||((ix|hx|lx)==0)) return x;	/* 0,inf,nan */
+	if (ix==0x0000) {		/* subnormal */
+	    x *= two65;
+	    GET_LDOUBLE_EXP(se,x);
+	    ix = se&0x7fff;
+	    *eptr = -65;
+	}
+	*eptr += ix-16382;
+	se = (se & 0x8000) | 0x3ffe;
+	SET_LDOUBLE_EXP(x,se);
+	return x;
+}
+weak_alias (__frexpl, frexpl)
diff --git a/sysdeps/libm-ieee754/s_ldexpl.c b/sysdeps/libm-ieee754/s_ldexpl.c
new file mode 100644
index 0000000..bf64c89
--- /dev/null
+++ b/sysdeps/libm-ieee754/s_ldexpl.c
@@ -0,0 +1,37 @@
+/* s_ldexpl.c -- long double version of s_ldexp.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+#include "math.h"
+#include "math_private.h"
+#include <errno.h>
+
+#ifdef __STDC__
+	long double __ldexpl(long double value, int exp)
+#else
+	long double __ldexpl(value, exp)
+	long double value; int exp;
+#endif
+{
+	if(!__finitel(value)||value==0.0) return value;
+	value = __scalbnl(value,exp);
+	if(!__finitel(value)||value==0.0) errno = ERANGE;
+	return value;
+}
+weak_alias (__ldexpl, ldexpl)
-- 
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