[Ffmpeg-devel] int vs. float: Hard Numbers

[Jukka Paasonen]

Some test results:

Pentium3 (katmai)
integer_adder() (10 adds) returned 50, 40 cycles used
float_adder() (10 adds) returned 50.000000, 57 cycles used
integer_mult() (10 mults) returned 9765625, 79 cycles used
float_mult() (10 mults) returned 9765625.000000, 77 cycles used


Athlon 64 3000+ (socket 754)
integer_adder() (10 adds) returned 50, 16 cycles used
float_adder() (10 adds) returned 50.000000, 8 cycles used
integer_mult() (10 mults) returned 9765625, 16 cycles used
float_mult() (10 mults) returned 9765625.000000, 8 cycles used


Athlon 64 3500+ (socket 939)
integer_adder() (10 adds) returned 50, 16 cycles used
float_adder() (10 adds) returned 50.000000, 8 cycles used
integer_mult() (10 mults) returned 9765625, 16 cycles used
float_mult() (10 mults) returned 9765625.000000, 8 cycles used


Jukka Paasonen

----------------------------------------------------------------
This mail sent through L-secure: http://www.l-secure.net/