Update to FreeBSD libm r336665.
This reverts commit 253a8306316cedfd6fd3e3a169fbffe4cac04035 and moves
us forward to a revision that contains fixes for the problem with the
previous attempt.
This also makes sincos(3)/sincosf(3)/sincosl(3) available to `_BSD_SOURCE`
as well as `_GNU_SOURCE`.
The new FreeBSD libm code requires the FreeBSD `__CONCAT` macro, and all
our existing callers are FreeBSD too, so update that.
There's also an assumption that <complex.h> drags in <math.h> which isn't
true for us, so work around that with `-include` in the makefile. This
then causes clang to recognize a bug -- returning from a void function --
in our fake (LP32) sincosl(3), so fix that too.
Bug: http://b/111710419
Change-Id: I84703ad844f8afde6ec6b11604ab3c096ccb62c3
Test: ran tests
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
index 04a4b6e..e38ea4f 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
@@ -31,7 +33,7 @@
* SUCH DAMAGE.
*
* @(#)mathimpl.h 8.1 (Berkeley) 6/4/93
- * $FreeBSD$
+ * $FreeBSD: head/lib/msun/bsdsrc/mathimpl.h 325966 2017-11-18 14:26:50Z pfg $
*/
#ifndef _MATHIMPL_H_