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Data types

The language provides 5 base types, and 2 composite types that can be used.

• Base types: Bool , Bits , UInt for unsigned integers, SInt for signed integers and Enum.

• Composite types: Bundle and Vec.

In addition to the base types, Spinal has support under development for:

• Fixed-point numbers (partial support)

• Auto-range Fixed-point numbers (add,sub,mul support)

• Floating-point numbers (experimental support)

Finally, a special type is available for checking equality between a BitVector and a bit constant pattern that contains holes defined like a bitmask (bit positions not to be compared by the equality expression).

Here is an example to show how you can achieve this (note the use of ‘M’ prefix) :

val myBits  = Bits(8 bits)
val itMatch = myBits === M"00--10--" // - don't care value