2012-04-19 14:35:52 +08:00
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/* libs/graphics/sgl/SkFP.h
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef SkFP_DEFINED
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#define SkFP_DEFINED
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#include "SkMath.h"
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#ifdef SK_SCALAR_IS_FLOAT
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typedef float SkFP;
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#define SkScalarToFP(n) (n)
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#define SkFPToScalar(n) (n)
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#define SkIntToFP(n) SkIntToScalar(n)
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#define SkFPRound(x) SkScalarRound(n)
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#define SkFPCeil(x) SkScalarCeil(n)
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#define SkFPFloor(x) SkScalarFloor(n)
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#define SkFPNeg(x) (-(x))
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#define SkFPAbs(x) SkScalarAbs(x)
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#define SkFPAdd(a, b) ((a) + (b))
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#define SkFPSub(a, b) ((a) - (b))
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#define SkFPMul(a, b) ((a) * (b))
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#define SkFPMulInt(a, n) ((a) * (n))
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#define SkFPDiv(a, b) ((a) / (b))
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#define SkFPDivInt(a, n) ((a) / (n))
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#define SkFPInvert(x) SkScalarInvert(x)
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#define SkFPSqrt(x) SkScalarSqrt(x)
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#define SkFPCubeRoot(x) sk_float_pow(x, 0.3333333f)
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#define SkFPLT(a, b) ((a) < (b))
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#define SkFPLE(a, b) ((a) <= (b))
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#define SkFPGT(a, b) ((a) > (b))
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#define SkFPGE(a, b) ((a) >= (b))
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#else // scalar is fixed
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#include "SkFloat.h"
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typedef int32_t SkFP;
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#define SkScalarToFP(n) SkFloat::SetShift(n, -16)
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#define SkFPToScalar(n) SkFloat::GetShift(n, -16)
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#define SkIntToFP(n) SkFloat::SetShift(n, 0)
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#define SkFPRound(x) SkFloat::Round(x);
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#define SkFPCeil(x) SkFloat::Ceil();
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#define SkFPFloor(x) SkFloat::Floor();
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#define SkFPNeg(x) SkFloat::Neg(x)
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#define SkFPAbs(x) SkFloat::Abs(x)
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#define SkFPAdd(a, b) SkFloat::Add(a, b)
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#define SkFPSub(a, b) SkFloat::Add(a, SkFloat::Neg(b))
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#define SkFPMul(a, b) SkFloat::Mul(a, b)
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#define SkFPMulInt(a, n) SkFloat::MulInt(a, n)
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#define SkFPDiv(a, b) SkFloat::Div(a, b)
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#define SkFPDivInt(a, n) SkFloat::DivInt(a, n)
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#define SkFPInvert(x) SkFloat::Invert(x)
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#define SkFPSqrt(x) SkFloat::Sqrt(x)
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#define SkFPCubeRoot(x) SkFloat::CubeRoot(x)
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#define SkFPLT(a, b) (SkFloat::Cmp(a, b) < 0)
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#define SkFPLE(a, b) (SkFloat::Cmp(a, b) <= 0)
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#define SkFPGT(a, b) (SkFloat::Cmp(a, b) > 0)
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#define SkFPGE(a, b) (SkFloat::Cmp(a, b) >= 0)
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#endif
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#ifdef SK_DEBUG
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void SkFP_UnitTest();
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#endif
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#endif
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