/* Symbol concatenation utilities.    Copyright (C) 1998-2026 Free Software Foundation, Inc.    This program 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 of the License, or   (at your option) any later version.    This program 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 program; if not, write to the Free Software Foundation, Inc.,   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */ #ifndef SYM_CAT_H#define SYM_CAT_H #if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE)#define CONCAT2(a,b)	 a##b#define CONCAT3(a,b,c)	 a##b##c#define CONCAT4(a,b,c,d) a##b##c##d#define CONCAT5(a,b,c,d,e) a##b##c##d##e#define CONCAT6(a,b,c,d,e,f) a##b##c##d##e##f#define STRINGX(s) #s#else/* Note one should never pass extra whitespace to the CONCATn macros,   e.g. CONCAT2(foo, bar) because traditonal C will keep the space between   the two labels instead of concatenating them.  Instead, make sure to   write CONCAT2(foo,bar).  */#define CONCAT2(a,b)	 a/**/b#define CONCAT3(a,b,c)	 a/**/b/**/c#define CONCAT4(a,b,c,d) a/**/b/**/c/**/d#define CONCAT5(a,b,c,d,e) a/**/b/**/c/**/d/**/e#define CONCAT6(a,b,c,d,e,f) a/**/b/**/c/**/d/**/e/**/f#define STRINGX(s) "s"#endif #define XCONCAT2(a,b)     CONCAT2(a,b)#define XCONCAT3(a,b,c)   CONCAT3(a,b,c)#define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d)#define XCONCAT5(a,b,c,d,e) CONCAT5(a,b,c,d,e)#define XCONCAT6(a,b,c,d,e,f) CONCAT6(a,b,c,d,e,f) /* Note the layer of indirection here is typically used to allow   stringification of the expansion of macros.  I.e. "#define foo   bar", "XSTRING(foo)", to yield "bar".  Be aware that this only   works for __STDC__, not for traditional C which will still resolve   to "foo".  */#define XSTRING(s) STRINGX(s)  #endif /* SYM_CAT_H */