Hi,
On 2/19/07, H. Peter Anvin <[email protected]> wrote:
Francis Moreau wrote:
> Hi,
>
> I must miss something...
>
> Looking at these prototypes
>
> unsigned long simple_strtoul(const char *cp, char **endp,unsigned int base)
> unsigned long long memparse (char *ptr, char **retptr)
>
> I'm really wondering why not all parameters are not all 'const'. None
> of these functions modify any pointer containts. And simple_strtoul()
> ends up doing sometghing like:
>
> if (endp)
> *endp = (char *)cp;
>
> Could anyone shed some light ?
The C standard behaves like that, too, mostly because C doesn't have a
way to say "X is const iff Y is const" (unlike C++, btw.)
hm, I don't get your point. I understand why we cast 'cp' into a (char
*) but that's not my point. My point is why aren't all function
parameters are not const ?
--
Francis
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