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Side by Side Diff: include/core/SkFixed.h

Issue 18539004: ARM Skia NEON patches - 04 - Clean SkFixed / SkLONGLONG (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Completely remove SkLONGLONG Created 7 years, 4 months ago
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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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165 165
166 inline bool SkFixedNearlyZero(SkFixed x, SkFixed tolerance = SK_FixedNearlyZero) 166 inline bool SkFixedNearlyZero(SkFixed x, SkFixed tolerance = SK_FixedNearlyZero)
167 { 167 {
168 SkASSERT(tolerance > 0); 168 SkASSERT(tolerance > 0);
169 return SkAbs32(x) < tolerance; 169 return SkAbs32(x) < tolerance;
170 } 170 }
171 171
172 //////////////////////////////////////////////////////////////////////////////// ////////////////////// 172 //////////////////////////////////////////////////////////////////////////////// //////////////////////
173 // Now look for ASM overrides for our portable versions (should consider putting this in its own file) 173 // Now look for ASM overrides for our portable versions (should consider putting this in its own file)
174 174
175 #ifdef SkLONGLONG
176 inline SkFixed SkFixedMul_longlong(SkFixed a, SkFixed b)
177 {
178 return (SkFixed)((SkLONGLONG)a * b >> 16);
179 }
180 inline SkFract SkFractMul_longlong(SkFract a, SkFract b)
181 {
182 return (SkFract)((SkLONGLONG)a * b >> 30);
183 }
184 inline SkFixed SkFixedSquare_longlong(SkFixed value)
185 {
186 return (SkFixed)((SkLONGLONG)value * value >> 16);
187 }
188 #define SkFixedMul(a,b) SkFixedMul_longlong(a,b)
189 #define SkFractMul(a,b) SkFractMul_longlong(a,b)
190 #define SkFixedSquare(a) SkFixedSquare_longlong(a)
191 #endif
192
193 #if defined(SK_CPU_ARM) 175 #if defined(SK_CPU_ARM)
194 /* This guy does not handle NaN or other obscurities, but is faster than 176 /* This guy does not handle NaN or other obscurities, but is faster than
195 than (int)(x*65536) 177 than (int)(x*65536)
196 */ 178 */
197 inline SkFixed SkFloatToFixed_arm(float x) 179 inline SkFixed SkFloatToFixed_arm(float x)
198 { 180 {
199 register int32_t y, z; 181 register int32_t y, z;
200 asm("movs %1, %3, lsl #1 \n" 182 asm("movs %1, %3, lsl #1 \n"
201 "mov %2, #0x8E \n" 183 "mov %2, #0x8E \n"
202 "sub %1, %2, %1, lsr #24 \n" 184 "sub %1, %2, %1, lsr #24 \n"
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282 #define SkFixed48ToFixed(x) ((SkFixed)((x) >> 32)) 264 #define SkFixed48ToFixed(x) ((SkFixed)((x) >> 32))
283 #define SkFloatToFixed48(x) ((SkFixed48)((x) * (65536.0f * 65536.0f * 65536. 0f))) 265 #define SkFloatToFixed48(x) ((SkFixed48)((x) * (65536.0f * 65536.0f * 65536. 0f)))
284 266
285 #ifdef SK_SCALAR_IS_FLOAT 267 #ifdef SK_SCALAR_IS_FLOAT
286 #define SkScalarToFixed48(x) SkFloatToFixed48(x) 268 #define SkScalarToFixed48(x) SkFloatToFixed48(x)
287 #else 269 #else
288 #define SkScalarToFixed48(x) SkFixedToFixed48(x) 270 #define SkScalarToFixed48(x) SkFixedToFixed48(x)
289 #endif 271 #endif
290 272
291 #endif 273 #endif
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