diff options
Diffstat (limited to 'bits')
| -rw-r--r-- | bits/long-double.h | 39 | ||||
| -rw-r--r-- | bits/mathdef.h | 10 |
2 files changed, 41 insertions, 8 deletions
diff --git a/bits/long-double.h b/bits/long-double.h new file mode 100644 index 0000000000..16578571b8 --- /dev/null +++ b/bits/long-double.h @@ -0,0 +1,39 @@ +/* Properties of long double type. + Copyright (C) 2016 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 diff --git a/bits/mathdef.h b/bits/mathdef.h index 014829790a..5e80e920b4 100644 --- a/bits/mathdef.h +++ b/bits/mathdef.h @@ -15,12 +15,6 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#if !defined _MATH_H && !defined _COMPLEX_H -# error "Never use <bits/mathdef.h> directly; include <math.h> instead" -#endif - -#ifndef __NO_LONG_DOUBLE_MATH -/* Signal that we do not really have a `long double'. The disables the - declaration of all the `long double' function variants. */ -# define __NO_LONG_DOUBLE_MATH 1 +#ifndef _COMPLEX_H +# error "Never use <bits/mathdef.h> directly; include <complex.h> instead" #endif |