Data commit

Task/Angle-difference-between-two-bearings/Go/angle-difference-between-two-bearings-1.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+type bearing float64
+
+var testCases = []struct{ b1, b2 bearing }{
+    {20, 45},
+    {-45, 45},
+    {-85, 90},
+    {-95, 90},
+    {-45, 125},
+    {-45, 145},
+    {29.4803, -88.6381},
+    {-78.3251, -159.036},
+}
+
+func main() {
+    for _, tc := range testCases {
+        fmt.Println(tc.b2.Sub(tc.b1))
+    }
+}
+
+func (b2 bearing) Sub(b1 bearing) bearing {
+    switch d := b2 - b1; {
+    case d < -180:
+        return d + 360
+    case d > 180:
+        return d - 360
+    default:
+        return d
+    }
+}

Task/Angle-difference-between-two-bearings/Go/angle-difference-between-two-bearings-2.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+    "fmt"
+    "math"
+)
+
+var testCases = []struct{ b1, b2 float64 }{
+    {20, 45},
+    {-45, 45},
+    {-85, 90},
+    {-95, 90},
+    {-45, 125},
+    {-45, 145},
+    {29.4803, -88.6381},
+    {-78.3251, -159.036},
+    {-70099.74233810938, 29840.67437876723},
+    {-165313.6666297357, 33693.9894517456},
+    {1174.8380510598456, -154146.66490124757},
+    {60175.77306795546, 42213.07192354373},
+}
+
+func main() {
+    for _, tc := range testCases {
+        fmt.Println(angleDifference(tc.b2, tc.b1))
+    }
+}
+
+func angleDifference(b2, b1 float64) float64 {
+    return math.Mod(math.Mod(b2-b1, 360)+360+180, 360) - 180
+}