24     SkNx(T val) : fLo(val), fHi(val) {}  in SkNx()
27     SkNx(const Half& lo, const Half& hi) : fLo(lo), fHi(hi) {}  in SkNx()
29     SkNx(T a, T b)                                : fLo(a),       fHi(b)       {}  in SkNx()
30     SkNx(T a, T b, T c, T d)                      : fLo(a,b),     fHi(c,d)     {}  in SkNx()
31     SkNx(T a, T b, T c, T d,  T e, T f, T g, T h) : fLo(a,b,c,d), fHi(e,f,g,h) {}  in SkNx()
33          T i, T j, T k, T l,  T m, T n, T o, T p) : fLo(a,b,c,d, e,f,g,h), fHi(i,j,k,l, m,n,o,p) {}  in SkNx()
43         fHi.store(vals+N/2);  in store()
46 #define OP(op) SkNx operator op(const SkNx& o) const { return {fLo op o.fLo, fHi op o.fHi}; }
52 #define OP(op) SkNx op() const { return {fLo.op(), fHi.op()}; }
58     SkNx operator << (int bits) const { return SkNx(fLo << bits, fHi << bits); }
59     SkNx operator >> (int bits) const { return SkNx(fLo >> bits, fHi >> bits); }
62         return {fLo.saturatedAdd(o.fLo), fHi.saturatedAdd(o.fHi)};  in saturatedAdd()
66         return {Half::Min(a.fLo, b.fLo), Half::Min(a.fHi, b.fHi)};  in Min()
69         return {Half::Max(a.fLo, b.fLo), Half::Max(a.fHi, b.fHi)};  in Max()
74         return k < N/2 ? fLo[k] : fHi[k-N/2];
77     bool allTrue() const { return fLo.allTrue() && fHi.allTrue(); }  in allTrue()
78     bool anyTrue() const { return fLo.anyTrue() || fHi.anyTrue(); }  in anyTrue()
80         return SkNx(fLo.thenElse(t.fLo, e.fLo), fHi.thenElse(t.fHi, e.fHi));  in thenElse()
86     Half fLo, fHi;  variable