On 6/27/05, Glen Low <email@hidden> wrote:
>
> On 27/06/2005, at 8:51 AM, Ken Brooks wrote:
>
> On 25 Jun 2005, at 14:25, Ken Brooks wrote:
>
>
>
> This code quit compiling when I went to XCode 2.0. What's up with long
> long?
>
> typedef unsigned long long PathTrace;
>
> const PathTrace trace0 = 0;
> const PathTrace trace1 = 0x8000000000000000;
>
> long long myvar = 0x8000000000000000;
>
> The errors:
>
> /Users/ken/Programs/Cat & Mouse 2view + AI/TestFile.cpp:4: error: integer
> constant is too large for 'long' type
> /Users/ken/Programs/Cat & Mouse 2view + AI/TestFile.cpp:6: error: integer
> constant is too large for 'long' type
>
> At 2:30 PM +0100 6/25/05, Frederick Cheung wrote:
> You need to append LL or ULL to the constant (eg 0x8000000000000000ULL)
>
> Fred
>
> Thanks, Fred. That fixed it right up.
>
> Now, where was this NEW REQUIREMENT documented? I read the 2.0 release
> notes carefully, and found nothing of the sort.
> gcc 4.0 is trying to be more conformant to the C/C++ spec, which IIRC says
> that constants fit into the smallest of s/u char, short or int that will fit
> by default. long long is not in the standard.
>
It's in the C99 standard. [long long]
But it's always better to specify what you mean with literals.
1.0 is a double
1.0f is a float
"Hello" is a char const []
L"Hello" is a wchar_t const []
etc etc.
Dave
>
>
> Cheers, Glen Low
>
>
>
>
>
>
>
> ---
>
> pixelglow software | simply brilliant stuff
>
> www.pixelglow.com
>
> aim: pixglen
>
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