🚀 go-pugleaf

davisonj@bnr.ca (John Davison) writes:
: 
: In article <28616@vedge.UUCP> hendrik@vedge.UUCP (Hendrik Boom) writes:

: >To make this work at least some of the time,
: >a function defined using old-style syntax,
: >will expect its parameters to have been converted
: >using the standard argument promotion rules.
: >
: >A function with a single real argument, such as
: >	f(r)real r;{    }
: 
:         You did not define "real".
: 
My mistake. I've spent ten years coding in C, ten years making
this mistake, and ten years being reminded by a compiler
what a nitwit I am!  Of course I mean float.

: >(a)	Include parameters in function declarations
: >	conditional on the absence of _NO_PROTO.
: ...
: >Its use is not dictated or mentioned by the ANSI standard.
: 
:     To determine if a compiler is Standard C, the existence and value (should
: be 1 in standard C) of __STDC__ should be checked.
: 

Right, __STDC__ tells me whether the compiler is standard C, in which case
it would be expected to accept prototypes.  But I use _NO_PROTO to tell
the include files whether to provide prototypes -- which is a different
issue:
	- it enables me to test the software in a mode in which an
	  end-user with a nonprototyping compiler might use it).
	- Nonstandard compilers sometimes do accept prototypes
	  without defining __STDC__
	- Compilers defining __STDC__ to 1 occasionally have bugs
	  and fail to do prototypes correctly (this is rare)

The specific word _NO_PROTO was chosen because it is used for this purpose
in a lot of manufacturers' include files on UNIX.  So many, in fact,
that I wonter whether there is some standard other tnat ANSI C that
mandates this.  Is there some edict from OSF? X/OPEN? POSIX? Anyone know?
 
: 
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