Revert of Mike's radial gradient CL with better float -> int.

src/core/SkNx.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.
  */
 
 #ifndef SkNx_DEFINED
 #define SkNx_DEFINED
 
@@ skipping 59 matching lines @@
 private:
     REQUIRE(0 == (N & (N-1)));
     SkNi(const SkNi<N/2, T>& lo, const SkNi<N/2, T>& hi) : fLo(lo), fHi(hi) {}
 
     SkNi<N/2, T> fLo, fHi;
 };
 
 template <int N, typename T>
 class SkNf {
     typedef SkNb<N, sizeof(T)> Nb;
-
-    static int32_t MyNi(float);
-    static int64_t MyNi(double);
-    typedef SkNi<N, decltype(MyNi(T()))> Ni;
 public:
     SkNf() {}
     explicit SkNf(T val) : fLo(val),  fHi(val) {}
     static SkNf Load(const T vals[N]) {
         return SkNf(SkNf<N/2,T>::Load(vals), SkNf<N/2,T>::Load(vals+N/2));
     }
 
     SkNf(T a, T b)                               : fLo(a),       fHi(b)       { REQUIRE(N==2); }
     SkNf(T a, T b, T c, T d)                     : fLo(a,b),     fHi(c,d)     { REQUIRE(N==4); }
     SkNf(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) { REQUIRE(N==8); }
 
     void store(T vals[N]) const {
         fLo.store(vals);
         fHi.store(vals+N/2);
     }
 
-    Ni castTrunc() const { return Ni(fLo.castTrunc(), fHi.castTrunc()); }
-
     SkNf operator + (const SkNf& o) const { return SkNf(fLo + o.fLo, fHi + o.fHi); }
     SkNf operator - (const SkNf& o) const { return SkNf(fLo - o.fLo, fHi - o.fHi); }
     SkNf operator * (const SkNf& o) const { return SkNf(fLo * o.fLo, fHi * o.fHi); }
     SkNf operator / (const SkNf& o) const { return SkNf(fLo / o.fLo, fHi / o.fHi); }
 
     Nb operator == (const SkNf& o) const { return Nb(fLo == o.fLo, fHi == o.fHi); }
     Nb operator != (const SkNf& o) const { return Nb(fLo != o.fLo, fHi != o.fHi); }
     Nb operator  < (const SkNf& o) const { return Nb(fLo  < o.fLo, fHi  < o.fHi); }
     Nb operator  > (const SkNf& o) const { return Nb(fLo  > o.fLo, fHi  > o.fHi); }
     Nb operator <= (const SkNf& o) const { return Nb(fLo <= o.fLo, fHi <= o.fHi); }
@@ skipping 59 matching lines @@
         return fVal;
     }
 
 private:
     T fVal;
 };
 
 template <typename T>
 class SkNf<1,T> {
     typedef SkNb<1, sizeof(T)> Nb;
-
-    static int32_t MyNi(float);
-    static int64_t MyNi(double);
-    typedef SkNi<1, decltype(MyNi(T()))> Ni;
 public:
     SkNf() {}
     explicit SkNf(T val) : fVal(val) {}
     static SkNf Load(const T vals[1]) { return SkNf(vals[0]); }
 
     void store(T vals[1]) const { vals[0] = fVal; }
 
-    Ni castTrunc() const { return Ni(fVal); }
-
     SkNf operator + (const SkNf& o) const { return SkNf(fVal + o.fVal); }
     SkNf operator - (const SkNf& o) const { return SkNf(fVal - o.fVal); }
     SkNf operator * (const SkNf& o) const { return SkNf(fVal * o.fVal); }
     SkNf operator / (const SkNf& o) const { return SkNf(fVal / o.fVal); }
 
     Nb operator == (const SkNf& o) const { return Nb(fVal == o.fVal); }
     Nb operator != (const SkNf& o) const { return Nb(fVal != o.fVal); }
     Nb operator  < (const SkNf& o) const { return Nb(fVal  < o.fVal); }
     Nb operator  > (const SkNf& o) const { return Nb(fVal  > o.fVal); }
     Nb operator <= (const SkNf& o) const { return Nb(fVal <= o.fVal); }
@@ skipping 49 matching lines @@
 typedef SkNf<2,   double> Sk2d;
 typedef SkNf<2, SkScalar> Sk2s;
 
 typedef SkNf<4,    float> Sk4f;
 typedef SkNf<4,   double> Sk4d;
 typedef SkNf<4, SkScalar> Sk4s;
 
 typedef SkNi<4, uint16_t> Sk4h;
 typedef SkNi<8, uint16_t> Sk8h;
 
-typedef SkNi<4, int> Sk4i;
-
 #endif//SkNx_DEFINED