*   DType is no longer convertible to an int. Use `dtype.as_datatype_enum`
        instead of `int(dtype)` to get the same result.
    *   Support both binary and -1/1 label input in v2 hinge and squared hinge
        losses.
    *   Added `LinearOperator.adjoint` and `LinearOperator.H` (alias).
    *   Expose CriticalSection in core as `tf.CriticalSection`.
    *   Enhanced graphviz output.

2^201 - 2 for i := 1; i < 50; i++ { // 2^250 - 2^50 t1.Square(&t1) } t0.Multiply(&t1, &t0) // 2^250 - 1 t0.Square(&t0) // 2^251 - 2 t0.Square(&t0) // 2^252 - 4 return v.Multiply(&t0, x) // 2^252 - 3 -> x^(2^252-3) } // sqrtM1 is 2^((p-1)/4), which squared is equal to -1 by Euler's Criterion. var sqrtM1 = &Element{1718705420411056, 234908883556509, 2233514472574048, 2117202627021982, 765476049583133} // SqrtRatio sets r to the non-negative square root of the ratio of u and v. // // If u/v is square,...