I thought I saw an app note/article/design idea/or somethin'
that discussed how to detect if a resulting value
outside -32768 -> 32767
would occur with:

i16_op1 - i16_op2
or
i16_op1 - u16_op2 (u16 might be 0-32767 only)

Trying to avoid using 24 bits.

Anyone see the doc? ... any ideas?
TIA

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