Short answer, yes. TBASIC supports enough bit operators to allow you to write code equivalent to the C example. The TBASIC version will be a bit less eloquent then the C version.
The is some built-in support for calculating CRCs in TBASiC. I suspect that it uses the same feedback terms as the CRC16-CCITT
Unfortunately I'm away form my computers and can't give you an example.
Gary d