reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1 | /* libs/graphics/sgl/SkFP.h |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #ifndef SkFP_DEFINED |
| 19 | #define SkFP_DEFINED |
| 20 | |
| 21 | #include "SkMath.h" |
| 22 | |
| 23 | #ifdef SK_SCALAR_IS_FLOAT |
| 24 | |
| 25 | typedef float SkFP; |
| 26 | |
| 27 | #define SkScalarToFP(n) (n) |
| 28 | #define SkFPToScalar(n) (n) |
| 29 | #define SkIntToFP(n) SkIntToScalar(n) |
| 30 | #define SkFPRound(x) SkScalarRound(n) |
| 31 | #define SkFPCeil(x) SkScalarCeil(n) |
| 32 | #define SkFPFloor(x) SkScalarFloor(n) |
| 33 | |
| 34 | #define SkFPNeg(x) (-(x)) |
| 35 | #define SkFPAbs(x) SkScalarAbs(x) |
| 36 | #define SkFPAdd(a, b) ((a) + (b)) |
| 37 | #define SkFPSub(a, b) ((a) - (b)) |
| 38 | #define SkFPMul(a, b) ((a) * (b)) |
| 39 | #define SkFPMulInt(a, n) ((a) * (n)) |
| 40 | #define SkFPDiv(a, b) ((a) / (b)) |
| 41 | #define SkFPDivInt(a, n) ((a) / (n)) |
| 42 | #define SkFPInvert(x) SkScalarInvert(x) |
| 43 | #define SkFPSqrt(x) SkScalarSqrt(x) |
| 44 | #define SkFPCubeRoot(x) pow(x, 1.0f/3) |
| 45 | |
| 46 | #define SkFPLT(a, b) ((a) < (b)) |
| 47 | #define SkFPLE(a, b) ((a) <= (b)) |
| 48 | #define SkFPGT(a, b) ((a) > (b)) |
| 49 | #define SkFPGE(a, b) ((a) >= (b)) |
| 50 | |
| 51 | #else // scalar is fixed |
| 52 | |
| 53 | #include "SkFloat.h" |
| 54 | |
| 55 | typedef int32_t SkFP; |
| 56 | |
| 57 | #define SkScalarToFP(n) SkFloat::SetShift(n, -16) |
| 58 | #define SkFPToScalar(n) SkFloat::GetShift(n, -16) |
| 59 | #define SkIntToFP(n) SkFloat::SetShift(n, 0) |
| 60 | #define SkFPRound(x) SkFloat::Round(x); |
| 61 | #define SkFPCeil(x) SkFloat::Ceil(); |
| 62 | #define SkFPFloor(x) SkFloat::Floor(); |
| 63 | |
| 64 | #define SkFPNeg(x) SkFloat::Neg(x) |
| 65 | #define SkFPAbs(x) SkFloat::Abs(x) |
| 66 | #define SkFPAdd(a, b) SkFloat::Add(a, b) |
| 67 | #define SkFPSub(a, b) SkFloat::Add(a, SkFloat::Neg(b)) |
| 68 | #define SkFPMul(a, b) SkFloat::Mul(a, b) |
| 69 | #define SkFPMulInt(a, n) SkFloat::MulInt(a, n) |
| 70 | #define SkFPDiv(a, b) SkFloat::Div(a, b) |
| 71 | #define SkFPDivInt(a, n) SkFloat::DivInt(a, n) |
| 72 | #define SkFPInvert(x) SkFloat::Invert(x) |
| 73 | #define SkFPSqrt(x) SkFloat::Sqrt(x) |
| 74 | #define SkFPCubeRoot(x) SkFloat::CubeRoot(x) |
| 75 | |
| 76 | #define SkFPLT(a, b) (SkFloat::Cmp(a, b) < 0) |
| 77 | #define SkFPLE(a, b) (SkFloat::Cmp(a, b) <= 0) |
| 78 | #define SkFPGT(a, b) (SkFloat::Cmp(a, b) > 0) |
| 79 | #define SkFPGE(a, b) (SkFloat::Cmp(a, b) >= 0) |
| 80 | |
| 81 | #endif |
| 82 | |
| 83 | #ifdef SK_DEBUG |
| 84 | void SkFP_UnitTest(); |
| 85 | #endif |
| 86 | |
| 87 | #endif |