Suppose that I want invert a number, i.e. 5 becomes -5 or -10 becomes 10. Mathematically, I can either multiply it by -1 or subtract it from 0. But what is quickest/most efficient on an 8-bit AVR? Or is the compiler smart enough to optimize either style to the fewest instructions? // Style #1 int o…

Inverting [or rather: negating] a number: what's quickest?

system Closed April 18, 2022, 6:57pm 13

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