Wireshark · Wireshark-dev: [Wireshark-dev] 64bit math

[Erwin Rol <mailinglists@xxxxxxxxxxxx>]

Hey all,

If i remember right 64bit is a bit problematic due to portability, so i 
have a question, how do i do the following in a "correct" way. For mpeg 
transport stream dissecting i need to get a a 42bit value from 48bits, 
the first 33bit are the "base" than 6 bits reserved and than 9 bits 
"extension". The value to display is "base * 300 + extension".  So what 
is the best way to get those 42 bits from those 6 bytes and calculate th 
value ?

- Erwin