bool.h

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/*-------------------------------------------------------------------------*
 * GNU Prolog                                                              *
 *                                                                         *
 * Part  : configuration                                                   *
 * File  : bool.h                                                          *
 * Descr.: boolean type definition - header file                           *
 * Author: Daniel Diaz                                                     *
 *                                                                         *
 * Copyright (C) 1999-2015 Daniel Diaz                                     *
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#ifndef _BOOL_H
#define _BOOL_H

#ifdef FALSE

#    if FALSE != 0
#        error "FALSE already defined with a value != 0"
#    endif
#else

#define FALSE 0

#endif

#ifdef TRUE

#    if TRUE != 1
#        error "TRUE already defined with a value != 1"
#    endif
#else

#define TRUE 1

#endif

#ifndef Bool
typedef int Bool;
#endif

#endif /* !_BOOL_H */