/*
 *  stdarg.h for MIPS-based systems
 *
 *  This header file is designed to work with
 *  Silicon Graphics IRIX 4.0.
 *  
 *  The C compilation system requires some alignment
 *  information to be manipulated when stepping through
 *  the argument list.
 */
#ifndef _STDARG_H
#define _STDARG_H

/*
 * The following code is a portable C++ implementation
 * of the "alignof" operation.  It uses the template
 * feature of C++ 3.0 to define a function that can
 * determine the alignment requirements for each datatype.
 */
#ifndef _VA_LIST_
#define _VA_LIST_
typedef char *va_list;
#endif /* !_VA_LIST_ */

static int dvz;
template <class T>
struct Ttmp { char c; T t; };
template <class T>
inline alignof(T *) {
	return (sizeof(Ttmp<T>) - sizeof(T));
}
#define _VA_ALIGNOF_ATTLC(mode) (alignof((mode *)(&dvz)))

#define va_start(__list, __parmN) (__list = (char *) \
 ( \
  (alignof(&__parmN) == 8) ? \
   (((unsigned int)&__parmN + sizeof(__parmN) + 8 - 1) & (~0x7) ) : \
   (((unsigned int)&__parmN + ((sizeof(__parmN) > 4)?sizeof(__parmN):4) + 4 - 1) & (~0x3)) \
  ) \
 )

#define va_arg(__list, __mode) ((__mode *)(__list = (char *) \
    ( \
      (_VA_ALIGNOF_ATTLC(__mode) == 8) ? \
       (((unsigned int)__list + sizeof(__mode) + 8 - 1) & (~0x7) ) : \
       (((unsigned int)__list + ((sizeof(__mode) > 4)?sizeof(__mode):4) + 4 - 1) & (~0x3)) \
    ) \
    )) [-1]

extern void va_end(va_list);

#define va_end(list) (void)0

#include <stdio.h>
extern "C" {
extern int vprintf(const char*, va_list),
	vfprintf(FILE*, const char*, va_list),
	vsprintf(char*, const char*, va_list);
}

#endif 	/* _STDARG_H */