[Oberon] Bit manipulation in Oberon-07

[Skulski, Wojciech]

Chris:

> We have implemented two SYSTEM functions in the Astrobe for ARM Cortex-M
> compilers which use the ARM bitfield instructions BFI (Bitfield insert) and
> UBFX (Unsigned bitfield extract). These are very convenient to use when
> accessing arbitrary groups of bits that represent a positive integer buried
> in the middle of a 32-bit word. Here are some examples:

This is wonderful. I hope that Oberon System compiler implementers  are listening!

Thank you for the example functions (snipped in this response). The students will appreciate your efficient way of coding.

Thank you,
Wojtek