def sq_neg
import bend-collections@1.0.0.0/src/math/f64.bend as F64import Base
import bend-collections@1.0.0.0/src/math/u64.bend as W
import bend-collections@1.0.0.0/src/math/w64.bend as X
446def sq_neg(+e: Nat, +s0: W.U64, +d: W.U64) -> F64:
447 sq_d1(e, s0, d, X.sub(X.add(s0, s0), W.U64{1, 0}), X.le(d, X.sub(X.add(s0, s0), W.U64{1, 0})))