68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
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* Copyright (C) 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 SkFDot6_DEFINED
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#define SkFDot6_DEFINED
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#include "SkMath.h"
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typedef int32_t SkFDot6;
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#define SK_FDot61 (64)
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#define SK_FDot6Half (32)
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#ifdef SK_DEBUG
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inline SkFDot6 SkIntToFDot6(S16CPU x)
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{
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SkASSERT(SkToS16(x) == x);
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return x << 6;
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}
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#else
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#define SkIntToFDot6(x) ((x) << 6)
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#endif
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#define SkFDot6Floor(x) ((x) >> 6)
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#define SkFDot6Ceil(x) (((x) + 63) >> 6)
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#define SkFDot6Round(x) (((x) + 32) >> 6)
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#define SkFixedToFDot6(x) ((x) >> 10)
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inline SkFixed SkFDot6ToFixed(SkFDot6 x)
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{
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SkASSERT((x << 10 >> 10) == x);
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return x << 10;
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}
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#ifdef SK_SCALAR_IS_FLOAT
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#define SkScalarToFDot6(x) (SkFDot6)((x) * 64)
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#else
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#define SkScalarToFDot6(x) ((x) >> 10)
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#endif
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inline SkFixed SkFDot6Div(SkFDot6 a, SkFDot6 b)
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{
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SkASSERT(b != 0);
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if (a == (int16_t)a)
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return (a << 16) / b;
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else
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return SkFixedDiv(a, b);
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}
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#endif
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