glibc/bits/long-double.h

40 lines
1.6 KiB
C

/* Properties of long double type.
Copyright (C) 2016-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* This header is included by <sys/cdefs.h>.
If long double is ABI-compatible with double, it should define
__NO_LONG_DOUBLE_MATH to 1; otherwise, it should leave
__NO_LONG_DOUBLE_MATH undefined.
If this build of the GNU C Library supports both long double
ABI-compatible with double and some other long double format not
ABI-compatible with double, it should define
__LONG_DOUBLE_MATH_OPTIONAL to 1; otherwise, it should leave
__LONG_DOUBLE_MATH_OPTIONAL undefined.
If __NO_LONG_DOUBLE_MATH is already defined, this header must not
define anything; this is needed to work with the definition of
__NO_LONG_DOUBLE_MATH in nldbl-compat.h. */
/* In the default version of this header, long double is
ABI-compatible with double. */
#ifndef __NO_LONG_DOUBLE_MATH
# define __NO_LONG_DOUBLE_MATH 1
#endif