8.5 Math

Bignums

ꙮ Integers cannot overflow any longer

Incompatibility

Main affected code: That which does bit fiddling. Examples:

• SHAx, MDx
• AES, DES
• CRCx

Now have to mask intermediary results to the proper bit size.

Not set a [expr {$b << N}]

But set a [expr {($b << N) & 0xFFFF}]