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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkNx_DEFINED | 8 #ifndef SkNx_DEFINED |
9 #define SkNx_DEFINED | 9 #define SkNx_DEFINED |
10 | 10 |
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71 static SkNf Max(const SkNf& l, const SkNf& r) { | 71 static SkNf Max(const SkNf& l, const SkNf& r) { |
72 return SkNf(SkNf<N/2,T>::Max(l.fLo, r.fLo), SkNf<N/2,T>::Max(l.fHi, r.fH
i)); | 72 return SkNf(SkNf<N/2,T>::Max(l.fLo, r.fLo), SkNf<N/2,T>::Max(l.fHi, r.fH
i)); |
73 } | 73 } |
74 | 74 |
75 SkNf sqrt() const { return SkNf(fLo. sqrt(), fHi. sqrt()); } | 75 SkNf sqrt() const { return SkNf(fLo. sqrt(), fHi. sqrt()); } |
76 SkNf rsqrt() const { return SkNf(fLo.rsqrt(), fHi.rsqrt()); } | 76 SkNf rsqrt() const { return SkNf(fLo.rsqrt(), fHi.rsqrt()); } |
77 | 77 |
78 SkNf invert() const { return SkNf(fLo. invert(), fHi. invert
()); } | 78 SkNf invert() const { return SkNf(fLo. invert(), fHi. invert
()); } |
79 SkNf approxInvert() const { return SkNf(fLo.approxInvert(), fHi.approxInvert
()); } | 79 SkNf approxInvert() const { return SkNf(fLo.approxInvert(), fHi.approxInvert
()); } |
80 | 80 |
81 T operator[] (int k) const { | 81 template <int k> T kth() const { |
82 SkASSERT(0 <= k && k < N); | 82 SkASSERT(0 <= k && k < N); |
83 return k < N/2 ? fLo[k] : fHi[k-N/2]; | 83 return k < N/2 ? fLo.template kth<k>() : fHi.template kth<k-N/2>(); |
84 } | 84 } |
85 | 85 |
86 private: | 86 private: |
87 REQUIRE(0 == (N & (N-1))); | 87 REQUIRE(0 == (N & (N-1))); |
88 SkNf(const SkNf<N/2, T>& lo, const SkNf<N/2, T>& hi) : fLo(lo), fHi(hi) {} | 88 SkNf(const SkNf<N/2, T>& lo, const SkNf<N/2, T>& hi) : fLo(lo), fHi(hi) {} |
89 | 89 |
90 SkNf<N/2, T> fLo, fHi; | 90 SkNf<N/2, T> fLo, fHi; |
91 }; | 91 }; |
92 | 92 |
93 | 93 |
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130 | 130 |
131 static SkNf Min(const SkNf& l, const SkNf& r) { return SkNf(SkTMin(l.fVal, r
.fVal)); } | 131 static SkNf Min(const SkNf& l, const SkNf& r) { return SkNf(SkTMin(l.fVal, r
.fVal)); } |
132 static SkNf Max(const SkNf& l, const SkNf& r) { return SkNf(SkTMax(l.fVal, r
.fVal)); } | 132 static SkNf Max(const SkNf& l, const SkNf& r) { return SkNf(SkTMax(l.fVal, r
.fVal)); } |
133 | 133 |
134 SkNf sqrt() const { return SkNf(Sqrt(fVal)); } | 134 SkNf sqrt() const { return SkNf(Sqrt(fVal)); } |
135 SkNf rsqrt() const { return SkNf((T)1 / Sqrt(fVal)); } | 135 SkNf rsqrt() const { return SkNf((T)1 / Sqrt(fVal)); } |
136 | 136 |
137 SkNf invert() const { return SkNf((T)1 / fVal); } | 137 SkNf invert() const { return SkNf((T)1 / fVal); } |
138 SkNf approxInvert() const { return this->invert(); } | 138 SkNf approxInvert() const { return this->invert(); } |
139 | 139 |
140 T operator[] (int SkDEBUGCODE(k)) const { | 140 template <int k> T kth() const { |
141 SkASSERT(k == 0); | 141 SkASSERT(k == 0); |
142 return fVal; | 142 return fVal; |
143 } | 143 } |
144 | 144 |
145 private: | 145 private: |
146 // We do double sqrts natively, or via floats for any other type. | 146 // We do double sqrts natively, or via floats for any other type. |
147 template <typename U> | 147 template <typename U> |
148 static U Sqrt(U val) { return (U) ::sqrtf((float)val); } | 148 static U Sqrt(U val) { return (U) ::sqrtf((float)val); } |
149 static double Sqrt(double val) { return ::sqrt ( val); } | 149 static double Sqrt(double val) { return ::sqrt ( val); } |
150 | 150 |
151 T fVal; | 151 T fVal; |
152 }; | 152 }; |
153 | 153 |
154 | 154 |
155 // Generic syntax sugar that should work equally well for all SkNi and SkNf impl
ementations. | 155 // Generic syntax sugar that should work equally well for all SkNi and SkNf impl
ementations. |
156 template <typename SkNx> SkNx operator - (const SkNx& l) { return SkNx((decltype
(l[0]))0) - l; } | 156 template <typename SkNx> SkNx operator - (const SkNx& l) { return SkNx(0) - l; } |
157 | 157 |
158 template <typename SkNx> SkNx& operator += (SkNx& l, const SkNx& r) { return (l
= l + r); } | 158 template <typename SkNx> SkNx& operator += (SkNx& l, const SkNx& r) { return (l
= l + r); } |
159 template <typename SkNx> SkNx& operator -= (SkNx& l, const SkNx& r) { return (l
= l - r); } | 159 template <typename SkNx> SkNx& operator -= (SkNx& l, const SkNx& r) { return (l
= l - r); } |
160 template <typename SkNx> SkNx& operator *= (SkNx& l, const SkNx& r) { return (l
= l * r); } | 160 template <typename SkNx> SkNx& operator *= (SkNx& l, const SkNx& r) { return (l
= l * r); } |
161 template <typename SkNx> SkNx& operator /= (SkNx& l, const SkNx& r) { return (l
= l / r); } | 161 template <typename SkNx> SkNx& operator /= (SkNx& l, const SkNx& r) { return (l
= l / r); } |
162 | 162 |
163 | 163 |
164 // Include platform specific specializations if available. | 164 // Include platform specific specializations if available. |
165 #ifndef SKNX_NO_SIMD | 165 #ifndef SKNX_NO_SIMD |
166 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 | 166 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
167 #include "../opts/SkNx_sse.h" | 167 #include "../opts/SkNx_sse.h" |
168 #elif defined(SK_ARM_HAS_NEON) | 168 #elif defined(SK_ARM_HAS_NEON) |
169 #include "../opts/SkNx_neon.h" | 169 #include "../opts/SkNx_neon.h" |
170 #endif | 170 #endif |
171 #endif | 171 #endif |
172 | 172 |
173 #undef REQUIRE | 173 #undef REQUIRE |
174 | 174 |
175 typedef SkNf<2, float> Sk2f; | 175 typedef SkNf<2, float> Sk2f; |
176 typedef SkNf<2, double> Sk2d; | 176 typedef SkNf<2, double> Sk2d; |
177 typedef SkNf<2, SkScalar> Sk2s; | 177 typedef SkNf<2, SkScalar> Sk2s; |
178 | 178 |
179 typedef SkNf<4, float> Sk4f; | 179 typedef SkNf<4, float> Sk4f; |
180 typedef SkNf<4, double> Sk4d; | 180 typedef SkNf<4, double> Sk4d; |
181 typedef SkNf<4, SkScalar> Sk4s; | 181 typedef SkNf<4, SkScalar> Sk4s; |
182 | 182 |
183 typedef SkNi<4, int32_t> Sk4i; | 183 typedef SkNi<4, int32_t> Sk4i; |
184 | 184 |
185 #endif//SkNx_DEFINED | 185 #endif//SkNx_DEFINED |
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