/* classes: h_files */ #ifndef SCM_BOOLEAN_H #define SCM_BOOLEAN_H /* Copyright (C) 1995,1996,2000 Free Software Foundation, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "libguile/__scm.h" /* Boolean Values * */ #define SCM_FALSEP(x) (SCM_EQ_P ((x), SCM_BOOL_F)) #define SCM_NFALSEP(x) (!SCM_FALSEP (x)) #define SCM_BOOLP(x) (SCM_EQ_P ((x), SCM_BOOL_F) || SCM_EQ_P ((x), SCM_BOOL_T)) /* Convert from a C boolean to a SCM boolean value */ #define SCM_BOOL(f) ((f) ? SCM_BOOL_T : SCM_BOOL_F) /* Convert from a C boolean to a SCM boolean value and negate it */ #define SCM_NEGATE_BOOL(f) ((f) ? SCM_BOOL_F : SCM_BOOL_T) /* SCM_BOOL_NOT returns the other boolean. * The order of ^s here is important for Borland C++ (!?!?!) */ #define SCM_BOOL_NOT(x) (SCM_PACK (SCM_UNPACK (x) \ ^ (SCM_UNPACK (SCM_BOOL_T) \ ^ SCM_UNPACK (SCM_BOOL_F)))) SCM_API SCM scm_not (SCM x); SCM_API SCM scm_boolean_p (SCM obj); SCM_API void scm_init_boolean (void); #endif /* SCM_BOOLEAN_H */ /* Local Variables: c-file-style: "gnu" End: */