Revision as of 13:05, 18 October 2015 (view source) rosettacode>Jolkdarr m (minor enhancements) ← Older edit		Revision as of 20:26, 19 October 2015 (view source) rosettacode>Jolkdarr (Kotlin idiom) Newer edit →
Line 838: <lang kotlin>import java.lang.Math.* ~~final~~ val R = 6372.8 // in kilometers▼ ~~internal object Haversine {~~ fun haversine(lat1: Double, lon1: Double, lat2: Double, lon2: Double) : Double▼ { val λ1 = toRadians(lat1)▼ val λ2 = toRadians(lat2)▼ val Δλ = toRadians(λ2 - λ1)▼ val Δφ = toRadians(lon2 - lon1)▼ return 2 * R * asin(sqrt(pow(sin(Δλ / 2), 2.0) + pow(sin(Δφ / 2), 2.0) * cos(λ1) * cos(λ2)))▼ } ▲ internal fun haversine(lat1: Double, lon1: Double, lat2: Double, lon2: Double) : Double { ▲ final val R = 6372.8 // in kilometers ▲ val λ1 = toRadians(lat1) ▲ val λ2 = toRadians(lat2) ▲ val Δλ = toRadians(λ2 - λ1) ▲ val Δφ = toRadians(lon2 - lon1) ▲ return 2 * R * asin(sqrt(pow(sin(Δλ / 2), 2.0) + pow(sin(Δφ / 2), 2.0) * cos(λ1) * cos(λ2))) } fun main(args : Array<String>) = println("result: " + ~~Haversine.~~haversine(36.12, -86.67, 33.94, -118.40))</lang> =={{header\|JavaScript}}==

Haversine formula: Difference between revisions

Haversine formula (view source)