Start with the least significant byte, use the Shift-Left "<<", then check the STATUS Register Carry bit to see if you have to add one to the more significant byte after shifting.
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Re: How to do bitwise shift across several variables/array members?
Start with the least significant byte, use the Shift-Left "<<", then check the STATUS Register Carry bit to see if you have to add one to the more significant byte after shifting.
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Re: How to do bitwise shift across several variables/array members?
I'm thinking it in the following way (as example, 2 byte array, shifted to right)
1. Read both array bytes into variables A and B
2. Shift B right 1 bit
3. Add LSB from A as MSB to B
4. Shift A right
5. Write A and B back to array
Repeat as desired.
Correct?
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Re: How to do bitwise shift across several variables/array members?
Yes, assuming you really do want a shift and don't want to rotate the value shifted out of B back into the MSB of the array.
There's no need to copy the array bytes to A and B, but if it helps you keep it straight then go for it.
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