1. Don't you have to cast the results of the division to int (from long
long) before this will work, i.e.
rtl_printf( "%d%09d" , (int)(t/100000...... ); ?
2. I also sent a code snippet for a function to format long-long in %16X.
Norm
At 12:13 AM 8/3/2000 +0400, Michael Barabanov wrote:
>t = gethrtime();
>rtl_printf("%d%09d", t / 1000000000, t % 1000000000);
>
>Michael.
>
>Dresner, Norman A. ([EMAIL PROTECTED]) wrote:
>> That answer isn't totally true.
>>
>> I have a driver that's linked with the gcc-library for 64-bit math that's
>> been running successfully for several months. In my RedHat 5.2 distribution
>> with the 2.0.36 kernel, that library is found at
>> /usr/lib/gcc-lib/i386-redhat-linux/ecgs-2..0.29/libgcc.a
>> and I am using 64-bit division in the (real-time) driver many times a
>> second.
>>
>> But I believe that the statement that printk() doesn't support long-long
>> quantities is still true.
>>
>> Norm Dresner
>> Fellow Systems Engineer
>> Radar Systems Engineering Department
>> Electronic Systems and Sensors Segment
>> Northrop Grumman Corporation
>> MS 520
>> Box 746
>> Baltimore MD 21203
>>
>> Voice: (410) 993 - 2096 Mornings; all-day voice-mail
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>> Afternoons: [EMAIL PROTECTED]
>>
>> > -----Original Message-----
>> > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
>> > Sent: Monday, July 31, 2000 7:33 AM
>> > To: [EMAIL PROTECTED]
>> > Cc: [EMAIL PROTECTED]
>> > Subject: Re: [rtl] rt_printk long long output
>> >
>> > > My question is a silly one : how to do rt_printk() of gethrtime()
return
>> > > value. gethrtime() returns 64-bit signed integer (a long long int).
>> > > I already tried %q (quad int), %L, and %ll but they won't work.
>> >
>> > No more than two months ago we discussed this topic
>> > on the list. Check archive.
>> >
>> > The answer is: no longlong capability of printk() because
>> > it would require 64 bit division. However your processor has
>> > 32 bit arithmetic only and no math library linked with the kernel.
>> >
>> > Print the time in hex:
>> > XXXXprint("%.8x%.8x", (long)((time>>32)&0xffffffff),
>> > (long)(time&0xffffffff));
>> >
>> > Gabor
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