switch err := err.(type) {
	case syntax.Error:
		return err.Pos, err.Msg
	case Error:
		return err.Pos, err.Msg
	default:
		return nopos, err.Error()
	}
}

// absDiff returns the absolute difference between x and y.
func absDiff(x, y uint) uint {
	if x < y {
		return y - x
	}
	return x - y
}

// parseFlags parses flags from the first line of the given source if the line

	switch err := err.(type) {
	case *scanner.Error:
		return err.Pos, err.Msg
	case Error:
		return fset.Position(err.Pos), err.Msg
	}
	panic("unreachable")
}

// absDiff returns the absolute difference between x and y.
func absDiff(x, y int) int {
	if x < y {
		return y - x
	}
	return x - y
}

// parseFlags parses flags from the first line of the given source if the line

	stddev      float64
	closeEnough float64
	maxError    float64
}

func nearEqual(a, b, closeEnough, maxError float64) bool {
	absDiff := math.Abs(a - b)
	if absDiff < closeEnough { // Necessary when one value is zero and one value is close to zero.
		return true
	}
	return absDiff/max(math.Abs(a), math.Abs(b)) < maxError
}

var testSeeds = []uint64{1, 1754801282, 1698661970, 1550503961}

	stddev      float64
	closeEnough float64
	maxError    float64
}

func nearEqual(a, b, closeEnough, maxError float64) bool {
	absDiff := math.Abs(a - b)
	if absDiff < closeEnough { // Necessary when one value is zero and one value is close to zero.
		return true
	}
	return absDiff/max(math.Abs(a), math.Abs(b)) < maxError
}

var testSeeds = []int64{1, 1754801282, 1698661970, 1550503961}