Re: unsigned 16 digit integer data type?
Re: unsigned 16 digit integer data type?
- Subject: Re: unsigned 16 digit integer data type?
- From: Shawn Erickson <email@hidden>
- Date: Tue, 4 Nov 2003 21:38:09 -0800
On Nov 4, 2003, at 6:52 PM, Ben Dougall wrote:
On Tuesday, November 4, 2003, at 11:49 pm, Henry McGilton wrote:
On Tuesday, November 4, 2003, at 02:27 PM, Clark Cox wrote:
On Nov 04, 2003, at 16:21, Matt Gillette wrote:
how can you print a long long out?
To print out unsigned long long, use %q (quad - I think)
what's the maximum value of a unsigned long long?
Not sure, but wouldn't it be 2^64 - 1?
Yes, but remember that that is the maximum guaranteed value (a
compiler/platform is free to support larger sizes)
Also think about using the uint64_t typedef rather than
explicitly spelling out unsigned long long.
The maximum value of a 64-bit unsigned would be 2 ^ 32 * 2 ^ 32 - 1,
or 18,446,744,073,709,551,615 --- that is more than eighteen
million trillion. Certainly big enough for sixteen decimal
digits.
off list someone suggested double. and that seems to work fine. is
double better option for 16 decimal digit values maybe? 16 digits is
the absolute maximum i need to store - there's no chance of it going
over that. space is an issue as i have a lot of them to store so i'd
like the tightest possible fit.
What type of number are you going to be working with? Is it an integer
or a floating point number?
If an integer then use uint64_t. I believe double supports exactly 16
digits of precision.
-Shawn
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.