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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkFixed_DEFINED | 10 #ifndef SkFixed_DEFINED |
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183 } | 183 } |
184 inline SkFixed SkFixedSquare_longlong(SkFixed value) | 184 inline SkFixed SkFixedSquare_longlong(SkFixed value) |
185 { | 185 { |
186 return (SkFixed)((SkLONGLONG)value * value >> 16); | 186 return (SkFixed)((SkLONGLONG)value * value >> 16); |
187 } | 187 } |
188 #define SkFixedMul(a,b) SkFixedMul_longlong(a,b) | 188 #define SkFixedMul(a,b) SkFixedMul_longlong(a,b) |
189 #define SkFractMul(a,b) SkFractMul_longlong(a,b) | 189 #define SkFractMul(a,b) SkFractMul_longlong(a,b) |
190 #define SkFixedSquare(a) SkFixedSquare_longlong(a) | 190 #define SkFixedSquare(a) SkFixedSquare_longlong(a) |
191 #endif | 191 #endif |
192 | 192 |
193 #if defined(SK_CPU_ARM) && !defined(__thumb__) | 193 #if defined(SK_CPU_ARM) |
194 /* This guy does not handle NaN or other obscurities, but is faster than | 194 /* This guy does not handle NaN or other obscurities, but is faster than |
195 than (int)(x*65536) | 195 than (int)(x*65536) |
196 */ | 196 */ |
197 inline SkFixed SkFloatToFixed_arm(float x) | 197 inline SkFixed SkFloatToFixed_arm(float x) |
198 { | 198 { |
199 register int32_t y, z; | 199 register int32_t y, z; |
200 asm("movs %1, %3, lsl #1 \n" | 200 asm("movs %1, %3, lsl #1 \n" |
201 "mov %2, #0x8E \n" | 201 "mov %2, #0x8E \n" |
202 "sub %1, %2, %1, lsr #24 \n" | 202 "sub %1, %2, %1, lsr #24 \n" |
203 "mov %2, %3, lsl #8 \n" | 203 "mov %2, %3, lsl #8 \n" |
204 "orr %2, %2, #0x80000000 \n" | 204 "orr %2, %2, #0x80000000 \n" |
205 "mov %1, %2, lsr %1 \n" | 205 "mov %1, %2, lsr %1 \n" |
| 206 "it cs \n" |
206 "rsbcs %1, %1, #0 \n" | 207 "rsbcs %1, %1, #0 \n" |
207 : "=r"(x), "=&r"(y), "=&r"(z) | 208 : "=r"(x), "=&r"(y), "=&r"(z) |
208 : "r"(x) | 209 : "r"(x) |
209 : "cc" | 210 : "cc" |
210 ); | 211 ); |
211 return y; | 212 return y; |
212 } | 213 } |
213 inline SkFixed SkFixedMul_arm(SkFixed x, SkFixed y) | 214 inline SkFixed SkFixedMul_arm(SkFixed x, SkFixed y) |
214 { | 215 { |
215 register int32_t t; | 216 register int32_t t; |
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281 #define SkFixed48ToFixed(x) ((SkFixed)((x) >> 32)) | 282 #define SkFixed48ToFixed(x) ((SkFixed)((x) >> 32)) |
282 #define SkFloatToFixed48(x) ((SkFixed48)((x) * (65536.0f * 65536.0f * 65536.
0f))) | 283 #define SkFloatToFixed48(x) ((SkFixed48)((x) * (65536.0f * 65536.0f * 65536.
0f))) |
283 | 284 |
284 #ifdef SK_SCALAR_IS_FLOAT | 285 #ifdef SK_SCALAR_IS_FLOAT |
285 #define SkScalarToFixed48(x) SkFloatToFixed48(x) | 286 #define SkScalarToFixed48(x) SkFloatToFixed48(x) |
286 #else | 287 #else |
287 #define SkScalarToFixed48(x) SkFixedToFixed48(x) | 288 #define SkScalarToFixed48(x) SkFixedToFixed48(x) |
288 #endif | 289 #endif |
289 | 290 |
290 #endif | 291 #endif |
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