Re: GH replacement proposal and bool datatype

Re: GH replacement proposal and bool datatype

[Nelson H. F. Beebe]

Dale P. Smith <dsmith@actron.com> comments:

>> Istr that the new C standard has a bool type.  (Maybe I'm thinking of C++)
>> If it does, shouldn't there be a plan to use that?

Both have bool, and C99 has <stdbool.h>, since the new type is
introduced via macros, unlike C++ where it is a new keyword.  From the
1999 ISO C Standard:

>> ...
>>      7.16  Boolean type and values <stdbool.h>
>> 
>> 1    The header <stdbool.h> defines four macros.
>> 2    The macro
>> 	      bool
>>      expands to _Bool.
>> 
>> 3    The remaining three macros are suitable for use in #if preprocessing directives.  They
>>      are
>> 	      true
>>      which expands to the integer constant 1,
>> 	      false
>>      which expands to the integer constant 0, and
>> 	      __bool_true_false_are_defined
>>      which expands to the integer constant 1.
>> 
>> 4    Notwithstanding the provisions of 7.1.3, a program may undefine and perhaps then
>>      redefine the macros bool, true, and false.213)
>> ...

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