case y >= 0.00099995:
		format = "%17.6f %s"
	default:
		format = "%18.7f %s"
	}
	fmt.Fprintf(w, format, x, unit)
}

// MemString returns r.AllocedBytesPerOp and r.AllocsPerOp in the same format as 'go test'.
func (r BenchmarkResult) MemString() string {
	return fmt.Sprintf("%8d B/op\t%8d allocs/op",
		r.AllocedBytesPerOp(), r.AllocsPerOp())
}