The OpenEdge Hive

This is the Haversine formula translated into an ABL procedure. The Haversine formula is used for determining the Great-Circle distance in km between two latitude/longitude references.

The formula is based off the Javascript interpretation here: http://www.codecodex.com/wiki/Calculate_Distance_Between_Two_Points_on_a...

Requires Progress STandard Libraries with math_asin function uncommented (see http://www.oehive.org/node/2057)