//go:build linux || freebsd
// +build linux freebsd

package format

import "fmt"

// Bytes formats byte count as human-readable string (DECIMAL units: KB=1000)
func Bytes(b int64) string {
	const unit = 1000
	if b < 0 {
		return "? B"
	}
	if b < unit {
		return fmt.Sprintf("%d B", b)
	}
	units := []string{"B", "KB", "MB", "GB", "TB", "PB"}
	value := float64(b)
	exp := 0
	for value >= unit && exp < len(units)-1 {
		value /= unit
		exp++
	}
	return fmt.Sprintf("%.1f %s", value, units[exp])
}

// Speed formats speed as human-readable string (DECIMAL units)
func Speed(speed float64) string {
	const unit = 1000
	if speed < 0 {
		return "? B/s"
	}
	if speed < unit {
		return fmt.Sprintf("%.1f B/s", speed)
	}
	units := []string{"B/s", "KB/s", "MB/s", "GB/s", "TB/s", "PB/s"}
	value := speed
	exp := 0
	for value >= unit && exp < len(units)-1 {
		value /= unit
		exp++
	}
	return fmt.Sprintf("%.1f %s", value, units[exp])
}