return values - 32, 64, 128 bits, type defs...etc/platform size

From: Linda Walsh (law@sgi.com)
Date: Fri Apr 21 2000 - 17:09:35 EDT

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    Earlier I wrote:
    > A point I forgot to ask about...Um. It wouldn't appear that any kernel calls return more than
    > 32 bits. I haven't thoroughly examined the code yet, but is it possible and/or feasible for a kernel
    > call to return a 'unsigned long long' as a return value? Else we'd have to pass in a pointer. 

    ---
	Fraddle.  Excuse me while I keep "thinking out loud"...so my only hope
was to look at how llseek returned a 64 bit value.  It drops the ball.  If
the point to seek to takes >32 bits, it just returns an error (EOVERFLOW) (implies:
"go ye therefore and do likewise").

    	Code says this should only happen on a 32bit platform.  That would
seem to imply that size of 'long long' = 'long' = 'int' on all 64 bit platforms.
Is that the case?  What does a 64 bit platform use to represent 128-bit
values (assuming a 'long-native int' exists)?  long long long int?  Eep.

    -l

    -- 
Linda A Walsh                    | Trust Technology, Core Linux, SGI
law@sgi.com                      | Voice: (650) 933-5338

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