Re: uint64_t error and architecture targets
Re: uint64_t error and architecture targets
- Subject: Re: uint64_t error and architecture targets
- From: Andreas Grosam <email@hidden>
- Date: Fri, 11 Feb 2011 09:55:16 +0100
On Feb 11, 2011, at 2:36 AM, Clark S. Cox III wrote:
>
> On Feb 10, 2011, at 5:28 PM, Todd Heberlein wrote:
>
>> In C++ code I have a line like:
>>
>> uint64_t y = 0xffffffffffffffffUL;
>>
>> This compiles fine when I have the architecture set to "Build Active Architecture Only". But if I uncheck this box, I get an error with the message "Integer constant is too large for 'unsigned long' type."
>
> The "UL" at the end of your literal indicates that you want it to be (unsigned long). On 32-bit, that isn't possible, and that is what the compiler is telling you. Use "ULL".
>
> On the other hand, a convenient way to get the maximum value into an unsigned variable, regardless of its size is to use -1"
>
> uint64_t y = -1;
In C++ I would prefer to write
#include <limits>
#include <stdint.h>
uint64_t y = std::numeric_limits<uint64_t>::max();
Best regards,
Andreas _______________________________________________
Do not post admin requests to the list. They will be ignored.
Xcode-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden