hpp-fcl: userprintf_rbox

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 /*<html><pre>  -<a                             href="qh-user_r.htm"
   >-------------------------------</a><a name="TOP">-</a>
 
    userprintf_rbox_r.c
    qh_fprintf_rbox()
 
    see README.txt  see COPYING.txt for copyright information.
 
    If you recompile and load this file, then userprintf_rbox_r.o will not be loaded
    from qhull.a or qhull.lib
 
    See libqhull_r.h for data structures, macros, and user-callable functions.
    See user_r.c for qhull-related, redefinable functions
    see user_r.h for user-definable constants
    See usermem_r.c for qh_exit(), qh_free(), and qh_malloc()
    see Qhull.cpp and RboxPoints.cpp for examples.
 
    Please report any errors that you fix to qhull@qhull.org
 */
 
 #include "libqhull_r.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 /*-<a                             href="qh-user_r.htm#TOC"
    >-------------------------------</a><a name="qh_fprintf_rbox">-</a>
 
    qh_fprintf_rbox(qh, fp, msgcode, format, list of args )
      print arguments to *fp according to format
      Use qh_fprintf_rbox() for rboxlib_r.c
 
    notes:
      same as fprintf()
      fgets() is not trapped like fprintf()
      exit qh_fprintf_rbox via qh_errexit_rbox()
 */
 
 void qh_fprintf_rbox(qhT *qh, FILE *fp, int msgcode, const char *fmt, ... ) {
     va_list args;
 
     if (!fp) {
         qh_fprintf_stderr(6231, "Qhull internal error (userprintf_rbox_r.c): fp is 0.  Wrong qh_fprintf_rbox called.\n");
         qh_errexit_rbox(qh, 6231);
     }
     if (msgcode >= MSG_ERROR && msgcode < MSG_STDERR)
       fprintf(fp, "QH%.4d ", msgcode);
     va_start(args, fmt);
     vfprintf(fp, fmt, args);
     va_end(args);
 } /* qh_fprintf_rbox */
 