Eliminate bounds checks in the loop. size := len(x.limbs) xLimbs := x.limbs[:size] shift := int(n % _W) shiftLimbs := int(n / _W) var shiftedLimbs []uint if shiftLimbs < size { shiftedLimbs = xLimbs[shiftLimbs:] } for i := range xLimbs { if i >= len(shiftedLimbs) { xLimbs[i] = 0 continue } xLimbs[i] = shiftedLimbs[i] >> shift if i+1 < len(shiftedLimbs) { xLimbs[i] |= shiftedLimbs[i+1] << (_W - shift) } } return x } // BitLenVarTime returns the actual size of x in bits. // // The actual size of x (but nothing...

Eliminate bounds checks in the loop. size := len(x.limbs) xLimbs := x.limbs[:size] shift := int(n % _W) shiftLimbs := int(n / _W) var shiftedLimbs []uint if shiftLimbs < size { shiftedLimbs = xLimbs[shiftLimbs:] } for i := range xLimbs { if i >= len(shiftedLimbs) { xLimbs[i] = 0 continue } xLimbs[i] = shiftedLimbs[i] >> shift if i+1 < len(shiftedLimbs) { xLimbs[i] |= shiftedLimbs[i+1] << (_W - shift) } } return x } // BitLenVarTime returns the actual size of x in bits. // // The actual size of x (but nothing...