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The C and C++ Include Header Files

/usr/include/c++/13/tr1/cfloat


$ cat -n /usr/include/c++/13/tr1/cfloat

     1	// TR1 cfloat -*- C++ -*-
     2	
     3	// Copyright (C) 2006-2023 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the
     7	// terms of the GNU General Public License as published by the
     8	// Free Software Foundation; either version 3, or (at your option)
     9	// any later version.
    10	
    11	// This library is distributed in the hope that it will be useful,
    12	// but WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14	// GNU General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	/** @file tr1/cfloat
    26	 *  This is a TR1 C++ Library header. 
    27	 */
    28	
    29	#ifndef _GLIBCXX_TR1_CFLOAT
    30	#define _GLIBCXX_TR1_CFLOAT 1
    31	
    32	#include <bits/requires_hosted.h> // TR1
    33	
    34	#include <cfloat>
    35	
    36	#ifndef DECIMAL_DIG
    37	#define DECIMAL_DIG __DECIMAL_DIG__
    38	#endif
    39	
    40	#ifndef FLT_EVAL_METHOD
    41	#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
    42	#endif
    43	
    44	#endif //_GLIBCXX_TR1_CFLOAT