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/* c-vararg.h: Top layer for stdarg and varargs.
Copyright (C) 1993 Karl Berry.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 */
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