RosettaCodeData/Task/Angle-difference-between-tw.../True-BASIC/angle-difference-between-tw...

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SUB getdifference (b1,b2)
LET r = REMAINDER(b2-b1, 360.0)
IF r >= 180.0 THEN LET r = r-360.0
PRINT USING "#######.###### #######.###### #######.######": b1, b2, r
END SUB
PRINT " Bearing 1 Bearing 2 Difference"
CALL getdifference(20.0, 45.0)
CALL getdifference(-45.0, 45.0)
CALL getdifference(-85.0, 90.0)
CALL getdifference(-95.0, 90.0)
CALL getdifference(-45.0, 125.0)
CALL getdifference(-45.0, 145.0)
CALL getdifference(-45.0, 125.0)
CALL getdifference(-45.0, 145.0)
CALL getdifference(29.4803, -88.6381)
CALL getdifference(-78.3251, -159.036)
CALL getdifference(-70099.74233810938, 29840.67437876723)
CALL getdifference(-165313.6666297357, 33693.9894517456)
CALL getdifference(1174.8380510598456, -154146.66490124757)
END