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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef Sk2x_DEFINED |
| 9 #define Sk2x_DEFINED |
| 10 |
| 11 #include "SkTypes.h" |
| 12 |
| 13 #define SK2X_PREAMBLE 1 |
| 14 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
| 15 #include "../opts/Sk2x_sse.h" |
| 16 #else |
| 17 #include "../opts/Sk2x_none.h" |
| 18 #endif |
| 19 #undef SK2X_PREAMBLE |
| 20 |
| 21 template <typename T> class Sk2x; |
| 22 typedef Sk2x<float> Sk2f; |
| 23 typedef Sk2x<double> Sk2d; |
| 24 |
| 25 #if SK_SCALAR_IS_FLOAT |
| 26 typedef Sk2f Sk2s; |
| 27 #elif SK_SCALAR_IS_DOUBLE |
| 28 typedef Sk2d Sk2s; |
| 29 #endif |
| 30 |
| 31 // This API is meant to be manageably small, not comprehensive. |
| 32 // Please talk to mtklein if you find yourself wanting more. |
| 33 template <typename T> class Sk2x { |
| 34 public: |
| 35 Sk2x(); // Uninitialized; use Sk2x(0) for zero. |
| 36 explicit Sk2x(T); // Same as Sk2x(T,T); |
| 37 Sk2x(T, T); |
| 38 |
| 39 Sk2x(const Sk2x& o) { *this = o; } |
| 40 Sk2x& operator=(const Sk2x&); |
| 41 |
| 42 // These assume no particular alignment. |
| 43 static Sk2x Load(const T[2]); |
| 44 void store(T[2]) const; |
| 45 |
| 46 Sk2x add(const Sk2x&) const; |
| 47 Sk2x subtract(const Sk2x&) const; |
| 48 Sk2x multiply(const Sk2x&) const; |
| 49 |
| 50 Sk2x rsqrt() const; // Approximate 1/this->sqrt(). |
| 51 Sk2x sqrt() const; // this->multiply(this->rsqrt()) may be faster, but le
ss precise. |
| 52 |
| 53 static Sk2x Min(const Sk2x&, const Sk2x&); |
| 54 static Sk2x Max(const Sk2x&, const Sk2x&); |
| 55 |
| 56 private: |
| 57 #define SK2X_PRIVATE 1 |
| 58 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
| 59 #include "../opts/Sk2x_sse.h" |
| 60 #else |
| 61 #include "../opts/Sk2x_none.h" |
| 62 #endif |
| 63 #undef SK2X_PRIVATE |
| 64 }; |
| 65 |
| 66 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
| 67 #include "../opts/Sk2x_sse.h" |
| 68 #else |
| 69 #include "../opts/Sk2x_none.h" |
| 70 #endif |
| 71 |
| 72 #endif//Sk2x_DEFINED |
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