var div, total, diffDiv, diffTotal int64
	for _, sample := range prof.Sample {
		var d, v int64
		v = value(sample.Value)
		if meanDiv != nil {
			d = meanDiv(sample.Value)
		}
		if v < 0 {
			v = -v
		}
		total += v
		div += d
		if sample.DiffBaseSample() {
			diffTotal += v
			diffDiv += d
		}
	}
	if diffTotal > 0 {
		total = diffTotal
		div = diffDiv