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authorKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
commit487ca4806cc046076293cf6cc5fbba0db282bac7 (patch)
tree847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/kpathsea/c-vararg.h
parenta3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff)
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
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+/* c-vararg.h: Top layer for stdarg and varargs.
+
+ Copyright 1998, 2005 Olaf Weber.
+ Copyright 1993 Karl Berry.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+#ifndef C_VARARG_H
+#define C_VARARG_H
+
+/* See function `init_path' in `kpathsea/tex-file.c' for an example of use.
+ The idea is to say PVAR1C(type1, parameter1, ap) in the function header,
+ and then end the function with two }}'s. We do this to avoid having to
+ specify the argument list (with types) twice -- once in the function
+ header, and once in a (hypothetical) VA_START1. */
+
+#ifdef HAVE_PROTOTYPES
+#include <stdarg.h>
+
+#define PVAR1H(p1) (p1, ...)
+#define PVAR2H(p1, p2) (p1, p2, ...)
+#define PVAR3H(p1, p2, p3) (p1, p2, p3, ...)
+
+#define PVAR1C(t1, n1, ap) \
+ (t1 n1, ...) { va_list ap; va_start (ap, n1);
+#define PVAR2C(t1, n1, t2, n2, ap) \
+ (t1 n1, t2 n2, ...) { va_list ap; va_start (ap, n2);
+#define PVAR3C(t1, n1, t2, n2, t3, n3, ap) \
+ (t1 n1, t2 n2, t3 n3, ...) { va_list ap; va_start (ap, n3);
+
+#else /* not HAVE_PROTOTYPES */
+#include <varargs.h>
+
+#define PVAR1H(p1) ()
+#define PVAR2H(p1, p2) ()
+#define PVAR3H(p1, p2, p3) ()
+
+#define PVAR1C(t1, n1, ap) \
+ (va_alist) va_dcl { t1 n1; va_list ap; va_start (ap); \
+ n1 = va_arg (ap, t1);
+#define PVAR2C(t1, n1, t2, n2, ap) \
+ (va_alist) va_dcl { t1 n1; t2 n2; va_list ap; va_start (ap); \
+ n1 = va_arg (ap, t1); n2 = va_arg (ap, t2);
+#define PVAR3C(t1, n1, t2, n2, t3, n3, ap) \
+ (va_alist) va_dcl { t1 n1; t2 n2; t3 n3; va_list ap; va_start (ap); \
+ n1 = va_arg (ap, t1); n2 = va_arg (ap, t2); \
+ n3 = va_arg (ap, t3);
+#endif /* not HAVE_PROTOTYPES */
+
+#endif /* not C_VARARG_H */