[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: OT large integer constants

Subject: Re: OT large integer constants
From: Steve Checkoway <email@hidden>
Date: Wed, 28 May 2008 02:25:36 -0700
Delivered-to: email@hidden
Delivered-to: email@hidden


On May 28, 2008, at 1:24 AM, email@hidden wrote:

as i am writing some 64-bit test code i want to check if
a certain result equals a certain number like:
if(mymicro1.microdata()==3048117485400){
   b=0;
   }
the constant '3048117485400' however is rejected by gcc with the error mess integer contstant too large for type, on the net i found that i should write

That's right, it's too large for a 32 bit long. If you compile with - arch ppc64 or -arch x86_64 then long will be 64 bits and it should work.

3048117485400ULL
of
3048117485400LL

but this results in the error
use of C99 long long integer constant


[steve$ cat large.c
#include <inttypes.h>
uint64_t foo() { return 3048117485400ULL; }
steve$ gcc -Wall large.c -c

No errors.

what am i to do if i want to keep maximum portability?

The best you can do is follow standards really. Without knowing with which other compiler you will be compiling this, it's hard to say more.

--
Steve Checkoway

    "Anyone who says that the solution is to educate the users
    hasn't ever met an actual user." -- Bruce Schneier

Attachment: smime.p7s
Description: S/MIME cryptographic signature

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Xcode-users mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/xcode-users/email@hidden

This email sent to email@hidden

References:
	>OT large integer constants (From: email@hidden)

Prev by Date: display of char *
Next by Date: [OT] best C++ mailing list related to Apple?
Previous by thread: OT large integer constants
Next by thread: Re: OT large integer constants
Index(es):
- Date
- Thread

Home