src/Coordinate.php
protected function isNumericInBounds(float $value, float $lower, float $upper): bool
    {
        return !($value < $lower || $value > $upper);
    }
protected function isNumericInBounds(float $value, float $lower, float $upper): bool
    {
        return !($value < $lower || $value > $upper);
    }
Checks if the given value is (1) numeric, and (2) between lower
and upper bounds (including the bounds values).

@param float $value
@param float $lower
@param float $upper

@return bool