+proc formatsf {pfx value} {
+ foreach {min format} { 100 %.0f 10 %.1f 0 %.2f} {
+ set fval [format $format $value]
+ if {$fval < $min} continue
+ return [format "$fval${pfx}" $value]
+ }
+}
+
+proc showintervalsecs/beat {howlong abbrev} {
+ # We split in two to avoid overflow problems.
+ if {$howlong < 86 } {
+ # mB's
+ set pfx mB
+ return [format "%.0fmB" [expr {round($howlong * 1.157)*10} ]]
+ } else {
+ if {$howlong < 86400 } {
+ # B's
+ set pfx B
+ set value [expr {$howlong / 86.4}]
+ } else {
+ # kB's
+ set pfx kB
+ set value [expr {$howlong / 86400.0}]
+ }
+ }
+ return [formatsf $pfx $value]
+}
+