mirror of
https://github.com/lcn2/calc.git
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4fddf82106
Fixed have_statfs optional executable file extension ${EXT{ in
the ${UTIL_PROGS} make variable.
Prevented the "fake boolean value" when <stdbool.h> is missing,
from complicating C compilers post c17 standard.
Test if <stdint.h> exists and set HAVE_STDINT_H accordingly
in have_stdint.h. Added HAVE_STDINT_H to allow one to force
this value.
Test if <inttypes.h> exists and set HAVE_INTTYPES_H accordingly
in have_inttypes.h. Added HAVE_INTTYPES_H to allow one to force
this value.
Added c_chk.c to check the compiler and C include for calc
requirements. If you are unable to compile this program, or
if this program when compiles does not exit 0, then your C
compiler and/or C include fails to meet calc requirements.
Compilers that are at least c99 MUST be able to compile this
program such that when run will exit 0.
The "make hsrc" file will attempt to compile and run c_chk and
will warn if the C compiler and/or C include fails to meet
calc requirements. The "make debug" system will run c_chk -c
to print information about the C compiler and C include.
Currently failure to compile cc_chk.c or c_chk exiting non-0
will just print "WARNING!!" strings to stderr.
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/*
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* bool - calc standard truth :-)
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*
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* Copyright (C) 2023 David I. Bell and Landon Curt Noll
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*
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* Primary author: David I. Bell
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*
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* Calc is open software; you can redistribute it and/or modify it under
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* the terms of the version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* Calc is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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* Public License for more details.
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*
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* A copy of version 2.1 of the GNU Lesser General Public License is
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* distributed with calc under the filename COPYING-LGPL. You should have
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* received a copy with calc; if not, write to Free Software Foundation, Inc.
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Under source code control: 2023/07/19 17:58:42
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* File existed as early as: 1990
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*
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* chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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* Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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*/
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#if !defined(INCLUDE_BOOL_H)
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#define INCLUDE_BOOL_H
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#if defined(HAVE_STDBOOL_H)
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#include <stdbool.h>
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#endif /* HAVE_STDBOOL_H */
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/*
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* standard truth :-)
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*/
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#if !defined(HAVE_STDBOOL_H)
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/* fake a <stdbool.h> header file */
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#if __STDC_VERSION__ <= 201710
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typedef unsigned int bool; /* fake boolean typedef */
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#endif /* __STDC_VERSION__ <= 201710 */
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#undef true
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#define true ((bool)(1))
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#undef false
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#define false ((bool)(0))
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#endif /* !HAVE_STDBOOL_H */
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/*
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* calc historic booleans
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*/
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#undef TRUE
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#define TRUE (true)
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#undef FALSE
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#define FALSE (false)
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#undef BOOL
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#define BOOL bool
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/*
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* booltostr - convert a boolean to a string
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*/
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#if !defined(booltostr)
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#define booltostr(x) ((x) ? "true" : "false")
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#endif
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/*
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* strtobool - convert a string to a boolean
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*/
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#if !defined(strtobool)
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#define strtobool(x) ((bool) ((x) != NULL && strcmp((x), "true") == 0))
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#endif
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#endif /* !INCLUDE_BOOL_H*/
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