1 /*
2  * Part of Scheme 48 1.9.  See file COPYING for notices and license.
3  *
4  * Authors: Richard Kelsey, Jonathan Rees
5  */
6 
7 #define PSTRUE  (0 == 0)
8 
9 #define PSFALSE (0 == 1)
10 
11 #define	psbool  char		/* boolean type */
12