Avoid excessive computation for cv_eval word_lsr #1379
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When the shift amount is large we know the result will be 0. We can do even better for lsl using modexp (see verifereum), so not touching that here now.
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When the shift amount is large we know the result will be 0.
We can do even better for lsl using modexp (see verifereum), so not touching that here now.