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→The basic method: Reverting change of 18 June; '-' is correct, because A has already been incremented; otherwise, + would be correct |
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Line 17:
::while Bsq isn't a square:
:::A ← A + 1
:::Bsq ← A*A - N // equivalently: Bsq ← Bsq + 2*A
::endwhile
::return A - sqrt(Bsq) // or A + sqrt(Bsq)
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