/****************************************************************************
*
* psfixed.h
*
* Adobe's code for Fixed Point Mathematics (specification only).
*
* Copyright 2007-2013 Adobe Systems Incorporated.
*
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* object code form as indicated by the copyright notice(s) included
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*/
#ifndef PSFIXED_H_
#define PSFIXED_H_
FT_BEGIN_HEADER
/* rasterizer integer and fixed point arithmetic must be 32-bit */
#define CF2_Fixed CF2_F16Dot16
typedef FT_Int32 CF2_Frac; /* 2.30 fixed point */
#define CF2_FIXED_MAX ( (CF2_Fixed)0x7FFFFFFFL )
#define CF2_FIXED_MIN ( (CF2_Fixed)0x80000000L )
#define CF2_FIXED_ONE ( (CF2_Fixed)0x10000L )
#define CF2_FIXED_EPSILON ( (CF2_Fixed)0x0001 )
/* in C 89, left and right shift of negative numbers is */
/* implementation specific behaviour in the general case */
#define cf2_intToFixed( i ) \
( (CF2_Fixed)( (FT_UInt32)(i) << 16 ) )
#define cf2_fixedToInt( x ) \
( (FT_Short)( ( (FT_UInt32)(x) + 0x8000U ) >> 16 ) )
#define cf2_fixedRound( x ) \
( (CF2_Fixed)( ( (FT_UInt32)(x) + 0x8000U ) & 0xFFFF0000UL ) )
#define cf2_doubleToFixed( f ) \
( (CF2_Fixed)( (f) * 65536.0 + 0.5 ) )
#define cf2_fixedAbs( x ) \
( (x) < 0 ? NEG_INT32( x ) : (x) )
#define cf2_fixedFloor( x ) \
( (CF2_Fixed)( (FT_UInt32)(x) & 0xFFFF0000UL ) )
#define cf2_fixedFraction( x ) \
( (x) - cf2_fixedFloor( x ) )
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