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1 /* | 1 /* |
2 * Copyright 2008 The Android Open Source Project | 2 * Copyright 2008 The Android Open Source Project |
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 #include "SkMathPriv.h" | 8 #include "SkMathPriv.h" |
9 #include "SkCordic.h" | 9 #include "SkCordic.h" |
10 #include "SkFloatBits.h" | 10 #include "SkFloatBits.h" |
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124 } | 124 } |
125 } | 125 } |
126 | 126 |
127 SkFixed SkFixedMul_portable(SkFixed a, SkFixed b) { | 127 SkFixed SkFixedMul_portable(SkFixed a, SkFixed b) { |
128 #if 0 | 128 #if 0 |
129 Sk64 tmp; | 129 Sk64 tmp; |
130 | 130 |
131 tmp.setMul(a, b); | 131 tmp.setMul(a, b); |
132 tmp.shiftRight(16); | 132 tmp.shiftRight(16); |
133 return tmp.fLo; | 133 return tmp.fLo; |
134 #elif defined(SkLONGLONG) | |
djsollen
2013/07/15 12:16:12
in include/core/SkPostConfig.h we define SkLONGLON
kevin.petit.not.used.account
2013/07/15 13:51:24
Yes but in this case, and unless I've missed somet
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135 return static_cast<SkFixed>((SkLONGLONG)a * b >> 16); | |
136 #else | 134 #else |
137 int sa = SkExtractSign(a); | 135 int sa = SkExtractSign(a); |
138 int sb = SkExtractSign(b); | 136 int sb = SkExtractSign(b); |
139 // now make them positive | 137 // now make them positive |
140 a = SkApplySign(a, sa); | 138 a = SkApplySign(a, sa); |
141 b = SkApplySign(b, sb); | 139 b = SkApplySign(b, sb); |
142 | 140 |
143 uint32_t ah = a >> 16; | 141 uint32_t ah = a >> 16; |
144 uint32_t al = a & 0xFFFF; | 142 uint32_t al = a & 0xFFFF; |
145 uint32_t bh = b >> 16; | 143 uint32_t bh = b >> 16; |
146 uint32_t bl = b & 0xFFFF; | 144 uint32_t bl = b & 0xFFFF; |
147 | 145 |
148 uint32_t R = ah * b + al * bh + (al * bl >> 16); | 146 uint32_t R = ah * b + al * bh + (al * bl >> 16); |
149 | 147 |
150 return SkApplySign(R, sa ^ sb); | 148 return SkApplySign(R, sa ^ sb); |
151 #endif | 149 #endif |
152 } | 150 } |
153 | 151 |
154 SkFract SkFractMul_portable(SkFract a, SkFract b) { | 152 SkFract SkFractMul_portable(SkFract a, SkFract b) { |
155 #if 0 | 153 #if 0 |
156 Sk64 tmp; | 154 Sk64 tmp; |
157 tmp.setMul(a, b); | 155 tmp.setMul(a, b); |
158 return tmp.getFract(); | 156 return tmp.getFract(); |
159 #elif defined(SkLONGLONG) | |
160 return static_cast<SkFract>((SkLONGLONG)a * b >> 30); | |
161 #else | 157 #else |
162 int sa = SkExtractSign(a); | 158 int sa = SkExtractSign(a); |
163 int sb = SkExtractSign(b); | 159 int sb = SkExtractSign(b); |
164 // now make them positive | 160 // now make them positive |
165 a = SkApplySign(a, sa); | 161 a = SkApplySign(a, sa); |
166 b = SkApplySign(b, sb); | 162 b = SkApplySign(b, sb); |
167 | 163 |
168 uint32_t ah = a >> 16; | 164 uint32_t ah = a >> 16; |
169 uint32_t al = a & 0xFFFF; | 165 uint32_t al = a & 0xFFFF; |
170 uint32_t bh = b >> 16; | 166 uint32_t bh = b >> 16; |
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527 } | 523 } |
528 | 524 |
529 /////////////////////////////////////////////////////////////////////////////// | 525 /////////////////////////////////////////////////////////////////////////////// |
530 | 526 |
531 SkFixed SkFixedTan(SkFixed radians) { return SkCordicTan(radians); } | 527 SkFixed SkFixedTan(SkFixed radians) { return SkCordicTan(radians); } |
532 SkFixed SkFixedASin(SkFixed x) { return SkCordicASin(x); } | 528 SkFixed SkFixedASin(SkFixed x) { return SkCordicASin(x); } |
533 SkFixed SkFixedACos(SkFixed x) { return SkCordicACos(x); } | 529 SkFixed SkFixedACos(SkFixed x) { return SkCordicACos(x); } |
534 SkFixed SkFixedATan2(SkFixed y, SkFixed x) { return SkCordicATan2(y, x); } | 530 SkFixed SkFixedATan2(SkFixed y, SkFixed x) { return SkCordicATan2(y, x); } |
535 SkFixed SkFixedExp(SkFixed x) { return SkCordicExp(x); } | 531 SkFixed SkFixedExp(SkFixed x) { return SkCordicExp(x); } |
536 SkFixed SkFixedLog(SkFixed x) { return SkCordicLog(x); } | 532 SkFixed SkFixedLog(SkFixed x) { return SkCordicLog(x); } |
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