- add long double signbit

- make long double versions weak aliases to double versions,
on archs where long doubles are 64 bits
- no need to have two finites.  finite() and finitef() are
non-standard 3BSD obsolete versions of isfinite.  remove
from libm.  make them weak_alias in libc to __isfinite and
__isfinitef instead.  similarly make 3BSD obsolete versions
of isinf, isinff, isnan, isnanf weak_aliases to C99's
__isinf, __isinff, __isnan, __isnanf
- bump major
ok millert@

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/libc/arch/amd64/gen/signbitl.c b/lib/libc/arch/amd64/gen/signbitl.c
new file mode 100644
index 00000000000..1f9f7ab332d
--- /dev/null
+++ b/lib/libc/arch/amd64/gen/signbitl.c
@@ -0,0 +1,28 @@
+/*	$OpenBSD: signbitl.c,v 1.1 2008/12/09 19:52:33 martynas Exp $	*/
+/*
+ * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <machine/ieee.h>
+#include <math.h>
+
+int
+__signbitl(long double e)
+{
+	struct ieee_ext *p = (struct ieee_ext *)&e;
+
+	return p->ext_sign;
+}