Initial data commit

Task/Haversine-formula/JavaScript/haversine-formula-1.js

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+function haversine() {
+       var radians = Array.prototype.map.call(arguments, function(deg) { return deg/180.0 * Math.PI; });
+       var lat1 = radians[0], lon1 = radians[1], lat2 = radians[2], lon2 = radians[3];
+       var R = 6372.8; // km
+       var dLat = lat2 - lat1;
+       var dLon = lon2 - lon1;
+       var a = Math.sin(dLat / 2) * Math.sin(dLat /2) + Math.sin(dLon / 2) * Math.sin(dLon /2) * Math.cos(lat1) * Math.cos(lat2);
+       var c = 2 * Math.asin(Math.sqrt(a));
+       return R * c;
+}
+console.log(haversine(36.12, -86.67, 33.94, -118.40));

Task/Haversine-formula/JavaScript/haversine-formula-2.js

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+((x, y) => {
+    'use strict';
+
+    // haversine :: (Num, Num) -> (Num, Num) -> Num
+    const haversine = ([lat1, lon1], [lat2, lon2]) => {
+        // Math lib function names
+        const [pi, asin, sin, cos, sqrt, pow, round] = [
+            'PI', 'asin', 'sin', 'cos', 'sqrt', 'pow', 'round'
+        ]
+        .map(k => Math[k]),
+
+            // degrees as radians
+            [rlat1, rlat2, rlon1, rlon2] = [lat1, lat2, lon1, lon2]
+            .map(x => x / 180 * pi),
+
+            dLat = rlat2 - rlat1,
+            dLon = rlon2 - rlon1,
+            radius = 6372.8; // km
+
+        // km
+        return round(
+            radius * 2 * asin(
+                sqrt(
+                    pow(sin(dLat / 2), 2) +
+                    pow(sin(dLon / 2), 2) *
+                    cos(rlat1) * cos(rlat2)
+                )
+            ) * 100
+        ) / 100;
+    };
+
+    // TEST
+    return haversine(x, y);
+
+    // --> 2887.26
+
+})([36.12, -86.67], [33.94, -118.40]);