Refactor Sk2x<T> + Sk4x<T> into SkNf<N,T> and SkNi<N,T>

src/opts/Sk2x_none.h

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-// It is important _not_ to put header guards here.
-// This file will be intentionally included three times.
-
-#include "SkTypes.h"  // Keep this before any #ifdef for skbug.com/3362
-
-#if defined(SK2X_PREAMBLE)
-    #include "SkFloatingPoint.h"
-    #include <math.h>
-
-#elif defined(SK2X_PRIVATE)
-    T fVec[2];
-
-#else
-
-#define M(...) template <typename T> __VA_ARGS__ Sk2x<T>::
-
-M() Sk2x() {}
-M() Sk2x(T val) { fVec[0] = fVec[1] = val; }
-M() Sk2x(T a, T b) { fVec[0] = a; fVec[1] = b; }
-
-M(Sk2x<T>&) operator=(const Sk2x<T>& o) {
-    fVec[0] = o.fVec[0];
-    fVec[1] = o.fVec[1];
-    return *this;
-}
-
-M(Sk2x<T>) Load(const T vals[2]) { return Sk2x<T>(vals[0], vals[1]); }
-M(void) store(T vals[2]) const { vals[0] = fVec[0]; vals[1] = fVec[1]; }
-
-M(Sk2x<T>) add(const Sk2x<T>& o) const {
-    return Sk2x<T>(fVec[0] + o.fVec[0], fVec[1] + o.fVec[1]);
-}
-M(Sk2x<T>) subtract(const Sk2x<T>& o) const {
-    return Sk2x<T>(fVec[0] - o.fVec[0], fVec[1] - o.fVec[1]);
-}
-M(Sk2x<T>) multiply(const Sk2x<T>& o) const {
-    return Sk2x<T>(fVec[0] * o.fVec[0], fVec[1] * o.fVec[1]);
-}
-M(Sk2x<T>) divide(const Sk2x<T>& o) const {
-    return Sk2x<T>(fVec[0] / o.fVec[0], fVec[1] / o.fVec[1]);
-}
-
-M(Sk2x<T>) Min(const Sk2x<T>& a, const Sk2x<T>& b) {
-    return Sk2x<T>(SkTMin(a.fVec[0], b.fVec[0]), SkTMin(a.fVec[1], b.fVec[1]));
-}
-M(Sk2x<T>) Max(const Sk2x<T>& a, const Sk2x<T>& b) {
-    return Sk2x<T>(SkTMax(a.fVec[0], b.fVec[0]), SkTMax(a.fVec[1], b.fVec[1]));
-}
-
-M(Sk2x<T>)       invert() const { return Sk2x<T>((T)1.0 / fVec[0], (T)1.0 / fVec[1]); }
-M(Sk2x<T>) approxInvert() const { return this->invert(); }
-
-#undef M
-
-#define M template <> inline
-
-M Sk2f Sk2f::rsqrt() const { return Sk2f(sk_float_rsqrt(fVec[0]), sk_float_rsqrt(fVec[1])); }
-M Sk2f Sk2f:: sqrt() const { return Sk2f(         sqrtf(fVec[0]),          sqrtf(fVec[1])); }
-
-M Sk2d Sk2d::rsqrt() const { return Sk2d(1.0/::sqrt(fVec[0]), 1.0/::sqrt(fVec[1])); }
-M Sk2d Sk2d:: sqrt() const { return Sk2d(    ::sqrt(fVec[0]),     ::sqrt(fVec[1])); }
-
-#undef M
-
-#endif