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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 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 #ifndef SkFixed_DEFINED | 8 #ifndef SkFixed_DEFINED |
9 #define SkFixed_DEFINED | 9 #define SkFixed_DEFINED |
10 | 10 |
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71 | 71 |
72 #define SkFixedRoundToFixed(x) (((x) + SK_FixedHalf) & 0xFFFF0000) | 72 #define SkFixedRoundToFixed(x) (((x) + SK_FixedHalf) & 0xFFFF0000) |
73 #define SkFixedCeilToFixed(x) (((x) + SK_Fixed1 - 1) & 0xFFFF0000) | 73 #define SkFixedCeilToFixed(x) (((x) + SK_Fixed1 - 1) & 0xFFFF0000) |
74 #define SkFixedFloorToFixed(x) ((x) & 0xFFFF0000) | 74 #define SkFixedFloorToFixed(x) ((x) & 0xFFFF0000) |
75 | 75 |
76 #define SkFixedAbs(x) SkAbs32(x) | 76 #define SkFixedAbs(x) SkAbs32(x) |
77 #define SkFixedAve(a, b) (((a) + (b)) >> 1) | 77 #define SkFixedAve(a, b) (((a) + (b)) >> 1) |
78 | 78 |
79 // The divide may exceed 32 bits. Clamp to a signed 32 bit result. | 79 // The divide may exceed 32 bits. Clamp to a signed 32 bit result. |
80 #define SkFixedDiv(numer, denom) \ | 80 #define SkFixedDiv(numer, denom) \ |
81 SkToS32(SkTPin<int64_t>((SkLeftShift((int64_t)numer, 16) / denom), SK_MinS32
, SK_MaxS32)) | 81 SkToS32(SkTPin<int64_t>((SkLeftShift((int64_t)(numer), 16) / (denom)), SK_Mi
nS32, SK_MaxS32)) |
82 | 82 |
83 ////////////////////////////////////////////////////////////////////////////////
////////////////////// | 83 ////////////////////////////////////////////////////////////////////////////////
////////////////////// |
84 // Now look for ASM overrides for our portable versions (should consider putting
this in its own file) | 84 // Now look for ASM overrides for our portable versions (should consider putting
this in its own file) |
85 | 85 |
86 inline SkFixed SkFixedMul_longlong(SkFixed a, SkFixed b) { | 86 inline SkFixed SkFixedMul_longlong(SkFixed a, SkFixed b) { |
87 return (SkFixed)((int64_t)a * b >> 16); | 87 return (SkFixed)((int64_t)a * b >> 16); |
88 } | 88 } |
89 #define SkFixedMul(a,b) SkFixedMul_longlong(a,b) | 89 #define SkFixedMul(a,b) SkFixedMul_longlong(a,b) |
90 | 90 |
91 | 91 |
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150 | 150 |
151 #define SkIntToFixed3232(x) (SkLeftShift((SkFixed3232)(x), 32)) | 151 #define SkIntToFixed3232(x) (SkLeftShift((SkFixed3232)(x), 32)) |
152 #define SkFixed3232ToInt(x) ((int)((x) >> 32)) | 152 #define SkFixed3232ToInt(x) ((int)((x) >> 32)) |
153 #define SkFixedToFixed3232(x) (SkLeftShift((SkFixed3232)(x), 16)) | 153 #define SkFixedToFixed3232(x) (SkLeftShift((SkFixed3232)(x), 16)) |
154 #define SkFixed3232ToFixed(x) ((SkFixed)((x) >> 16)) | 154 #define SkFixed3232ToFixed(x) ((SkFixed)((x) >> 16)) |
155 #define SkFloatToFixed3232(x) ((SkFixed3232)((x) * (65536.0f * 65536.0f))) | 155 #define SkFloatToFixed3232(x) ((SkFixed3232)((x) * (65536.0f * 65536.0f))) |
156 | 156 |
157 #define SkScalarToFixed3232(x) SkFloatToFixed3232(x) | 157 #define SkScalarToFixed3232(x) SkFloatToFixed3232(x) |
158 | 158 |
159 #endif | 159 #endif |
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