Timing at a nominal precision of 0.4%: We cannot distinguish between A and B: (-2.22045e-14 [1.9685] 4.51977)% Timing at a nominal precision of 0.08%: We cannot distinguish between A and B: (-5.22489 [0.0530135] 4.15175)%
So what does this means ?
It means what it says, for the two functions you are timing there is no measurable difference in execution time that cannot be explained by chance. So, if you think A is faster than B or B is faster than A, you are mistaken. The final figure for example, -5.22 --- +4.15, indicates that with a 95% chance the speedup of A relative to B lies between those extremes. Since these extremes clearly include zero you can't say there is a speedup. The best point estimate of the speedup is 0.053% (naff all!). -ed ------------------------------------------------ "No more boom and bust." -- Dr. J. G. Brown, 1997