Replace arithmetic ops with bitwise shifts in FastMath - #673
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Use bitwise shift operations (<< 1, >> 2, & 7) instead of explicit arithmetic (* 2, / 4, % 8) in the new FastMath library to save gas. - mul2: x * 2 → x << 1 - div4: x / 4 → x >> 2 - mod8: x % 8 → x & 7 Each bitwise op saves ~2 gas vs its arithmetic counterpart.
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CLOSES #670
Use bitwise shift operations (<< 1, >> 2, & 7) instead of explicit arithmetic (* 2, / 4, % 8) in the new FastMath library to save gas.
Each bitwise op saves ~2 gas vs its arithmetic counterpart.