Here are some typical results from benchmarking your routine along with some of the routines in the other thread. (I omitted ikegami's as he wasn't happy with it): 

c:\test>708290-b -LOG=4 -MAX=1e3
Testing buk    with    10 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.000244 seconds
Testing funky  with    10 random values in the range 0 .. 1e3 Differen
+ce:=    65; took 0.000118 seconds
Testing tilly  with    10 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.004491 seconds
Testing tye    with    10 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.001024 seconds

Testing buk    with   100 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.005047 seconds
Testing funky  with   100 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.000587 seconds
Testing tilly  with   100 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 15.174596 seconds
Testing tye    with   100 random values in the range 0 .. 1e3         
+  ******* timed out after 60 seconds

Testing buk    with  1000 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.015625 seconds
Testing funky  with  1000 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.007535 seconds
Testing tilly  with  1000 random values in the range 0 .. 1e3         
+  ******* timed out after 60 seconds
Testing tye    with  1000 random values in the range 0 .. 1e3         
+  ******* timed out after 60 seconds

Testing buk    with 10000 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.075423 seconds
Testing funky  with 10000 random values in the range 0 .. 1e3 Differen
+ce:=     1; took 0.190954 seconds
Testing tilly  with 10000 random values in the range 0 .. 1e3         
+  ******* timed out after 60 seconds
Testing tye    with 10000 random values in the range 0 .. 1e3         
+  ******* timed out after 60 seconds

c:\test>708290-b -LOG=4 -MAX=1e4
Testing buk    with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.000326 seconds
Testing funky  with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.000102 seconds
Testing tilly  with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.003578 seconds
Testing tye    with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.001063 seconds

Testing buk    with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.044324 seconds
Testing funky  with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     7; took 0.000601 seconds
Testing tilly  with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 15.901730 seconds
Testing tye    with   100 random valuesin the range 0 .. 1e4          
+  ******* timed out after 60 seconds

Testing buk    with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.515625 seconds
Testing funky  with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.008393 seconds
Testing tilly  with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.013012 seconds
Testing tye    with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:= 92467; took 0.016869 seconds

Testing buk    with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 4.654061 seconds
Testing funky  with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.136925 seconds
Testing tilly  with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.148673 seconds
Testing tye    with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:= 2252553; took 1.632284 seconds

c:\test>708290-b -LOG=4 -MAX=1e4
Testing buk    with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     2; took 0.003548 seconds
Testing funky  with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=   198; took 0.000107 seconds
Testing tilly  with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     2; took 0.003799 seconds
Testing tye    with    10 random valuesin the range 0 .. 1e4 Differenc
+e:=     2; took 0.001117 seconds

Testing buk    with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.213406 seconds
Testing funky  with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     2; took 0.000587 seconds
Testing tilly  with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=     0; took 0.003341 seconds
Testing tye    with   100 random valuesin the range 0 .. 1e4 Differenc
+e:=  1282; took 0.001121 seconds

Testing buk    with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.007796 seconds
Testing funky  with  1000 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.007606 seconds
Testing tilly  with  1000 random valuesin the range 0 .. 1e4          
+  ******* timed out after 60 seconds
Testing tye    with  1000 random valuesin the range 0 .. 1e4          
+  ******* timed out after 60 seconds

Testing buk    with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 4.281250 seconds
Testing funky  with 10000 random valuesin the range 0 .. 1e4 Differenc
+e:=     1; took 0.150492 seconds
Testing tilly  with 10000 random valuesin the range 0 .. 1e4          
+  ******* timed out after 60 seconds
Testing tye    with 10000 random valuesin the range 0 .. 1e4          
+  ******* timed out after 60 seconds

[download]

The full benchmark code is here:

<Reveal this spoiler or all in this thread>
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re: NP-complete sometimes isn't (A benchmark) by BrowserUk
in thread NP-complete sometimes isn't by tilly

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