diff options
| author | obrien <obrien@FreeBSD.org> | 2002-05-28 16:16:03 +0000 |
|---|---|---|
| committer | obrien <obrien@FreeBSD.org> | 2002-05-28 16:16:03 +0000 |
| commit | 0895e1acb698e05d503c26bec5471de2e88b7d93 (patch) | |
| tree | 7b14e1142a8f8cf48f311f5246aa3b355f2380b6 /contrib/libstdc++/libmath/signbit.c | |
| parent | efbfe7b228c18b8cc364aabaefd6f8253bc6b5ad (diff) | |
| download | FreeBSD-src-0895e1acb698e05d503c26bec5471de2e88b7d93.zip FreeBSD-src-0895e1acb698e05d503c26bec5471de2e88b7d93.tar.gz | |
Gcc 3.1.0 pre-release's C++ support bits from the FSF anoncvs repo
on 9-May-2002 15:57:15 EDT.
Diffstat (limited to 'contrib/libstdc++/libmath/signbit.c')
| -rw-r--r-- | contrib/libstdc++/libmath/signbit.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/contrib/libstdc++/libmath/signbit.c b/contrib/libstdc++/libmath/signbit.c new file mode 100644 index 0000000..f400b8d --- /dev/null +++ b/contrib/libstdc++/libmath/signbit.c @@ -0,0 +1,41 @@ +/* Return nonzero value if number is negative. */ + +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. + + This file is part of the GNU ISO C++ Library. This library is free + software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) + any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this library; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, + USA. + + As a special exception, you may use this file as part of a free software + library without restriction. Specifically, if other files instantiate + templates or use macros or inline functions from this file, or you compile + this file and link it with other files to produce an executable, this + file does not by itself cause the resulting executable to be covered by + the GNU General Public License. This exception does not however + invalidate any other reasons why the executable file might be covered by + the GNU General Public License. */ + + +#include <math.h> +#include "mathconf.h" + +int +__signbit (double x) +{ + Int32_t hx; + + GET_HIGH_WORD (hx, x); + return hx & 0x80000000; +} |
