Upgrade libm.

This brings us up to date with FreeBSD HEAD, fixes various bugs, unifies
the set of functions we support on ARM, MIPS, and x86, fixes "long double",
adds ISO C99 support, and adds basic unit tests.

It turns out that our "long double" functions have always been broken
for non-normal numbers. This patch fixes that by not using the upstream
implementations and just forwarding to the regular "double" implementation
instead (since "long double" on Android is just "double" anyway, which is
what BSD doesn't support).

All the tests pass on ARM, MIPS, and x86, plus glibc on x86-64.

Bug: 3169850
Bug: 8012787
Bug: https://code.google.com/p/android/issues/detail?id=6697
Change-Id: If0c343030959c24bfc50d4d21c9530052c581837

1 files changed, 0 insertions, 80 deletions

diff --git a/libm/man/tanh.3 b/libm/man/tanh.3
deleted file mode 100644
index 391bc15..0000000
--- a/libm/man/tanh.3
+++ /dev/null
@@ -1,80 +0,0 @@
-.\" Copyright (c) 1991 The Regents of the University of California.
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     from: @(#)tanh.3	5.1 (Berkeley) 5/2/91
-.\" $FreeBSD: src/lib/msun/man/tanh.3,v 1.10 2001/10/13 12:23:23 bde Exp $
-.\"
-.Dd May 2, 1991
-.Dt TANH 3
-.Os
-.Sh NAME
-.Nm tanh ,
-.Nm tanhf
-.Nd hyperbolic tangent functions
-.Sh LIBRARY
-.Lb libm
-.Sh SYNOPSIS
-.In math.h
-.Ft double
-.Fn tanh "double x"
-.Ft float
-.Fn tanhf "float x"
-.Sh DESCRIPTION
-The
-.Fn tanh
-and the
-.Fn tanhf
-functions compute the hyperbolic tangent of
-.Fa x .
-For a discussion of error due to roundoff, see
-.Xr math 3 .
-.Sh RETURN VALUES
-The
-.Fn tanh
-and the
-.Fn tanhf
-functions return the hyperbolic tangent value.
-.Sh SEE ALSO
-.Xr acos 3 ,
-.Xr asin 3 ,
-.Xr atan 3 ,
-.Xr atan2 3 ,
-.Xr cos 3 ,
-.Xr cosh 3 ,
-.Xr math 3 ,
-.Xr sin 3 ,
-.Xr sinh 3 ,
-.Xr tan 3
-.Sh STANDARDS
-The
-.Fn tanh
-function conforms to
-.St -isoC .