GFormatSizeFlags

behave the same as g_format_size()

include the exact number of bytes as part of the returned string. For example, "45.6 kB (45,612 bytes)".

use IEC (base 1024) units with "KiB"-style suffixes. IEC units should only be used for reporting things with a strong "power of 2" basis, like RAM sizes or RAID stripe sizes. Network and storage sizes should be reported in the normal SI units.

set the size as a quantity in bits, rather than bytes, and return units in bits. For example, ‘Mb’ rather than ‘MB’.