-#ifdef __STDC__
+/*
+
+@deftypefn Supplemental int vprintf (const char *@var{format}, va_list @var{ap})
+@deftypefnx Supplemental int vfprintf (FILE *@var{stream}, @
+ const char *@var{format}, va_list @var{ap})
+@deftypefnx Supplemental int vsprintf (char *@var{str}, @
+ const char *@var{format}, va_list @var{ap})
+
+These functions are the same as @code{printf}, @code{fprintf}, and
+@code{sprintf}, respectively, except that they are called with a
+@code{va_list} instead of a variable number of arguments. Note that
+they do not call @code{va_end}; this is the application's
+responsibility. In @libib{} they are implemented in terms of the
+nonstandard but common function @code{_doprnt}.
+
+@end deftypefn
+
+*/
+
+#include <ansidecl.h>
#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
#include <stdio.h>
-#include <ansidecl.h>
#undef vprintf
int
-vprintf (format, ap)
- const char *format;
- va_list ap;
+vprintf (const char *format, va_list ap)
{
return vfprintf (stdout, format, ap);
}