[pcpro17]

Hello. I'm trying to use printf to display 64-bit numbers (unsigned long long). The problem is it keeps giving me negative numbers (when using %d or %e) or they sometimes seem too small (when using %u). Here is a snippet of my code, and following it is the results it prints:

   printf( "Time1 ................. %e cycles\n", t1 );
   printf( "Time2 ................. %e cycles\n", t2 );
   printf( "Time2 - Time1 ......... %e cycles\n", time_passed );

Time1 ................. 7.488818e-309 cycles
Time2 ................. 7.488942e-309 cycles
Time2 - Time1 ......... 1.244329e-313 cycles

Is there another format specifier, or another print funciton, I should be using? It seems to work okay when I use the %x with it broken into two 32-bit numbers (unsigned long), but I need to work with it as a 64-bit number because I perform math on it for benchmarking purposes.

Thanks.

[IMM]

It's a bit compiler dependent - but should be either %ld or %lld I think

---edit
whoops - just reread this and you probably want %llu ?
see http://unixhelp.ed.ac.uk/CGI/man-cgi?sprintf+3

[pcpro17]

Originally Posted by IMM

It's a bit compiler dependent - but should be either %ld or %lld I think

---edit
whoops - just reread this and you probably want %llu ?
see http://unixhelp.ed.ac.uk/CGI/man-cgi?sprintf+3

Thanks, IMM! That did the trick!