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* Fix corner case in color_comparator() and clarify a comment.Tavian Barnes2014-03-201-4/+4
| | | | | | | If anum == 0 and bdenom == 0, we should check anum*sgn(adenom) < bnum*sgn(bdenom), not anum*adenom < bnum*bdenom.
* Use link-time optimization.Tavian Barnes2014-03-201-1/+1
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* Make hue sorting 3x faster by avoiding atan2() calls.Tavian Barnes2014-03-201-16/+51
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* Put -lm -lpng at the end of the command line.Tavian Barnes2014-03-131-3/+6
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* Be more const friendly.Tavian Barnes2014-03-122-5/+5
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* Try to be more even in which neighbor to choose.Tavian Barnes2014-03-121-18/+23
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* Look for strictly better matches in the k-d tree code.Tavian Barnes2014-03-111-2/+2
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* Refactor hue comparator into color.c.Tavian Barnes2014-03-113-28/+27
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* Get rid of some unreachable abort()s.Tavian Barnes2014-03-111-6/+0
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* Allow different color spaces to be used for similarity measurement.Tavian Barnes2014-03-116-64/+216
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* Use a better method of getting rid of HUE_SORT artifacts.Tavian Barnes2014-03-111-9/+6
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* Initial commit.Tavian Barnes2014-03-118-0/+734