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Float Equal Problem
Understand limitations of floating point representations.Never check for equality with ==. Instead, check if the difference is less than an epsilon value.
public class Line{ static double epsilon=0.000001; public double slope; public double yintersect; public Line(double s, double y){ slope=s; yintersect=y; } public boolean intersect(Line line2){ return Math.abs(slope-line2.slope)>epsilon|| Math.abs(yintersect-line2.yintersect)<epsilon; }}
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