#define problem

[Dave Giunti]

reply to:
>From: beaucham at uxh.cso.uiuc.edu (James Beauchamp)
>Date: 20 Jun 91 05:18:27 GMT
>Organization: University of Illinois at Urbana
>Message-ID: <1991Jun20.051827.23428 at ux1.cso.uiuc.edu>
>Newsgroups: comp.lang.c
JB>
JB>I have many occurences of 'printf(' which I would like to replace with
JB>'fprintf(stderr,' in my C program.  Is there a way to do this #define?
JB>
JB>#define printf( fprintf(sterr,
JB>
JB>definitely doesn't parse.

   Hi Jim,
    I just tried to redefine some curses calls in this manner;
 unfortunatly you can't use a single '(' in a #define : it's a
 couples only dance.  And you can't do a variable parameter pass
 inside the finger-nails.  Catch 22...

   To try and get a little more performence out of Gnu Chess
 I was willing to do a little thinking.  Here is a solution I
 found that worked:

#ifdef MSDOS                  /* pre #defined by Microsoft C*/ 
#define printz fprintf        /* curses to whatever I needed to test */ 
#define STDER  stderr,        /* or any other stream */ 
#else 
#define STDER                 /* a null declaration */ 
#endif

then something like
  printz( STDER "this could go anywhere");  /* can have meaning */

  It might be more usefull to have a couple of classes of defined 
output for various chanels.

    I should point out that I didn't get faster output from this 
and it bloated the code so I junked it... but I am almost positive 
I got the comma past the troll of defines.

   Dave  at Fidonet 1:125/98  (Uhura)

  BTW  Is anyone else out there hacking on Gnu Chess, either inside 
or outside MS DOS?

 * EZ 1.33 *



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