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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SkFDot6_DEFINED
#define SkFDot6_DEFINED
#include "SkMath.h"
typedef int32_t SkFDot6;
#define SK_FDot61 (64)
#define SK_FDot6Half (32)
#ifdef SK_DEBUG
inline SkFDot6 SkIntToFDot6(S16CPU x)
{
SkASSERT(SkToS16(x) == x);
return x << 6;
}
#else
#define SkIntToFDot6(x) ((x) << 6)
#endif
#define SkFDot6Floor(x) ((x) >> 6)
#define SkFDot6Ceil(x) (((x) + 63) >> 6)
#define SkFDot6Round(x) (((x) + 32) >> 6)
#define SkFixedToFDot6(x) ((x) >> 10)
inline SkFixed SkFDot6ToFixed(SkFDot6 x)
{
SkASSERT((x << 10 >> 10) == x);
return x << 10;
}
#ifdef SK_SCALAR_IS_FLOAT
#define SkScalarToFDot6(x) (SkFDot6)((x) * 64)
#else
#define SkScalarToFDot6(x) ((x) >> 10)
#endif
inline SkFixed SkFDot6Div(SkFDot6 a, SkFDot6 b)
{
SkASSERT(b != 0);
if (a == (int16_t)a)
return (a << 16) / b;
else
return SkFixedDiv(a, b);
}
#endif
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