Function sqrt [src]

Compute the square root of x2, returning error.NotSquare if x2 was not a square

Prototype

pub fn sqrt(x2: Fe) NotSquareError!Fe

Parameters

x2: Fe

Possible Errors

Source

  pub fn sqrt(x2: Fe) NotSquareError!Fe {
    const x2_copy = x2;
    const x = x2.uncheckedSqrt();
    const check = x.sq().sub(x2_copy);
    if (check.isZero()) {
        return x;
    }
    return error.NotSquare;
}  