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##

Inclusion in an angle interval

The procedure:

int Angle_Ok_Interval(double angle,double b1,double b2);

return 1 if the angle `angle` belongs to the angle
interval [`b1`,`b2`], 0 otherwise. The angle `angle,b1, b2`
should have a value within [0,].

Jean-Pierre Merlet
2012-12-20