grokify/mogo

package mathutil

func IsEven(i int) bool {
    return i%2 == 0
}

func IsOdd(i int) bool {
    return !IsEven(i)
}

func IsOverlapSortedInt(x1, x2, y1, y2 int) bool {
    return x1 <= y2 && y1 <= x2
}

func IsOverlapSortedInt32(x1, x2, y1, y2 int32) bool {
    return x1 <= y2 && y1 <= x2
}

func IsOverlapSortedInt64(x1, x2, y1, y2 int64) bool {
    return x1 <= y2 && y1 <= x2
}

func IsOverlapUnsortedInt(x1, x2, y1, y2 int) bool {
    return (x1 >= y1 && x1 <= y2) ||
        (x2 >= y1 && x2 <= y2) ||
        (y1 >= x1 && y1 <= x2) ||
        (y2 >= x1 && y2 <= x2)
}