The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/long-double.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/long-double.h

     1	/* Properties of long double type.  ldbl-96 version.
     2	   Copyright (C) 2016-2024 Free Software Foundation, Inc.
     3	   This file is part of the GNU C Library.
     4	
     5	   The GNU C Library is free software; you can redistribute it and/or
     6	   modify it under the terms of the GNU Lesser General Public
     7	   License  published by the Free Software Foundation; either
     8	   version 2.1 of the License, or (at your option) any later version.
     9	
    10	   The GNU C Library is distributed in the hope that it will be useful,
    11	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13	   Lesser General Public License for more details.
    14	
    15	   You should have received a copy of the GNU Lesser General Public
    16	   License along with the GNU C Library; if not, see
    17	   <https://www.gnu.org/licenses/>.  */
    18	
    19	/* long double is distinct from double, so there is nothing to
    20	   define here.  */
    21	#define __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 0