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/*
* Copyright (c) 2009 Samit Basu
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __Cast_hpp__
#define __Cast_hpp__
#include "Types.hpp"
#include "IEEEFP.hpp"
# define FMINT8_MIN (-128)
# define FMINT16_MIN (-32767-1)
# define FMINT32_MIN (-2147483647-1)
# define FMINT64_MIN (-Q_INT64_C(9223372036854775807)-1)
/* Maximum of signed integral types. */
# define FMINT8_MAX (127)
# define FMINT16_MAX (32767)
# define FMINT32_MAX (2147483647)
# define FMINT64_MAX (Q_INT64_C(9223372036854775807))
/* Maximum of unsigned integral types. */
# define FMUINT8_MAX (255)
# define FMUINT16_MAX (65535)
# define FMUINT32_MAX (4294967295U)
# define FMUINT64_MAX (Q_UINT64_C(18446744073709551615))
#if defined(_MSC_VER)
double round( double x );
float roundf( float x );
#endif
template <typename T, typename S>
inline T CastConvert(S val);
#define MacroBoolIn(outtype) \
template <> \
inline outtype CastConvert(bool val) { \
if (val) \
return 1; \
else \
return 0; \
}
MacroBoolIn(int8);
MacroBoolIn(int16);
MacroBoolIn(int32);
MacroBoolIn(int64);
MacroBoolIn(uint8);
MacroBoolIn(uint16);
MacroBoolIn(uint32);
MacroBoolIn(uint64);
MacroBoolIn(float);
MacroBoolIn(double);
#define MacroBoolOut(intype) \
template <> \
inline bool CastConvert(intype val) { \
if (val == 0) return false; \
return true; \
}
MacroBoolOut(int8);
MacroBoolOut(int16);
MacroBoolOut(int32);
MacroBoolOut(int64);
MacroBoolOut(uint8);
MacroBoolOut(uint16);
MacroBoolOut(uint32);
MacroBoolOut(uint64);
MacroBoolOut(float);
MacroBoolOut(double);
#define MacroCastLimitXform(outtype,intype,lowlimit,hilimit,roundfunc) \
template <> \
inline outtype CastConvert(intype val) { \
if (IsNaN(val)) return 0; \
if (val < lowlimit) return lowlimit; \
if (val > hilimit) return hilimit; \
return outtype(roundfunc(val)); \
}
#define MacroCastLimitXformAll(source,round) \
MacroCastLimitXform(uint64,source,0,FMUINT64_MAX,round); \
MacroCastLimitXform(uint32,source,0,FMUINT32_MAX,round); \
MacroCastLimitXform(uint16,source,0,FMUINT16_MAX,round); \
MacroCastLimitXform(uint8,source,0,FMUINT8_MAX,round); \
MacroCastLimitXform(int64,source,FMINT64_MIN,FMINT64_MAX,round); \
MacroCastLimitXform(int32,source,FMINT32_MIN,FMINT32_MAX,round); \
MacroCastLimitXform(int16,source,FMINT16_MIN,FMINT16_MAX,round); \
MacroCastLimitXform(int8,source,FMINT8_MIN,FMINT8_MAX,round);
MacroCastLimitXformAll(double,round);
MacroCastLimitXformAll(float,roundf);
#define MacroCastLimit(outtype,intype,lowlimit,hilimit) \
template <> \
inline outtype CastConvert(intype val) { \
if (IsNaN(val)) return 0; \
if (val < lowlimit) return lowlimit; \
if (val > hilimit) return hilimit; \
return outtype(val); \
}
#define MacroCastUpLimit(outtype,intype,hilimit) \
template <> \
inline outtype CastConvert(intype val) { \
if (IsNaN(val)) return 0; \
if (val > hilimit) return hilimit; \
return outtype(val); \
}
#define MacroCastPosLimit(outtype,intype) \
template <> \
inline outtype CastConvert(intype val) { \
if (IsNaN(val)) return 0; \
if (val < 0) return 0; \
return outtype(val); \
}
#define MacroCastNoOp(outtype,intype) \
template <> \
inline outtype CastConvert(intype val) { \
return outtype(val); \
}
#define MacroCastNoLimit(outtype,intype) \
template <> \
inline outtype CastConvert(intype val) { \
return outtype(val); \
}
MacroCastNoOp(uint64,uint64);
MacroCastUpLimit(uint32,uint64,FMUINT32_MAX);
MacroCastUpLimit(uint16,uint64,FMUINT16_MAX);
MacroCastUpLimit(uint8,uint64,FMUINT8_MAX);
MacroCastUpLimit(int64,uint64,FMINT64_MAX);
MacroCastUpLimit(int32,uint64,FMINT32_MAX);
MacroCastUpLimit(int16,uint64,FMINT16_MAX);
MacroCastUpLimit(int8,uint64,FMINT8_MAX);
MacroCastNoLimit(uint64,uint32);
MacroCastNoOp(uint32,uint32);
MacroCastUpLimit(uint16,uint32,FMUINT16_MAX);
MacroCastUpLimit(uint8,uint32,FMUINT8_MAX);
MacroCastNoLimit(int64,uint32);
MacroCastUpLimit(int32,uint32,FMINT32_MAX);
MacroCastUpLimit(int16,uint32,FMINT16_MAX);
MacroCastUpLimit(int8,uint32,FMINT8_MAX);
MacroCastNoLimit(uint64,uint16);
MacroCastNoLimit(uint32,uint16);
MacroCastNoOp(uint16,uint16);
MacroCastUpLimit(uint8,uint16,FMUINT8_MAX);
MacroCastNoLimit(int64,uint16);
MacroCastNoLimit(int32,uint16);
MacroCastUpLimit(int16,uint16,FMINT16_MAX);
MacroCastUpLimit(int8,uint16,FMINT8_MAX);
MacroCastNoLimit(uint64,uint8);
MacroCastNoLimit(uint32,uint8);
MacroCastNoLimit(uint16,uint8);
MacroCastNoOp(uint8,uint8);
MacroCastNoLimit(int64,uint8);
MacroCastNoLimit(int32,uint8);
MacroCastNoLimit(int16,uint8);
MacroCastUpLimit(int8,uint8,FMINT8_MAX);
MacroCastLimit(uint64,int64,0,FMINT64_MAX);
MacroCastLimit(uint32,int64,0,FMUINT32_MAX);
MacroCastLimit(uint16,int64,0,FMUINT16_MAX);
MacroCastLimit(uint8,int64,0,FMUINT8_MAX);
MacroCastNoOp(int64,int64);
MacroCastLimit(int32,int64,FMINT32_MIN,FMINT32_MAX);
MacroCastLimit(int16,int64,FMINT16_MIN,FMINT16_MAX);
MacroCastLimit(int8,int64,FMINT8_MIN,FMINT8_MAX);
MacroCastPosLimit(uint64,int32);
MacroCastPosLimit(uint32,int32);
MacroCastLimit(uint16,int32,0,FMUINT16_MAX);
MacroCastLimit(uint8,int32,0,FMUINT8_MAX);
MacroCastNoLimit(int64,int32);
MacroCastNoOp(int32,int32);
MacroCastLimit(int16,int32,FMINT16_MIN,FMINT16_MAX);
MacroCastLimit(int8,int32,FMINT8_MIN,FMINT8_MAX);
MacroCastPosLimit(uint64,int16);
MacroCastPosLimit(uint32,int16);
MacroCastPosLimit(uint16,int16);
MacroCastLimit(uint8,int16,0,FMUINT8_MAX);
MacroCastNoLimit(int64,int16);
MacroCastNoLimit(int32,int16);
MacroCastNoOp(int16,int16);
MacroCastLimit(int8,int16,FMINT8_MIN,FMINT8_MAX);
MacroCastPosLimit(uint64,int8);
MacroCastPosLimit(uint32,int8);
MacroCastPosLimit(uint16,int8);
MacroCastPosLimit(uint8,int8);
MacroCastNoLimit(int64,int8);
MacroCastNoLimit(int32,int8);
MacroCastNoLimit(int16,int8);
MacroCastNoOp(int8,int8);
MacroCastNoLimit(float,double);
MacroCastNoLimit(double,float);
MacroCastNoLimit(float,int8);
MacroCastNoLimit(float,int16);
MacroCastNoLimit(float,int32);
MacroCastNoLimit(float,int64);
MacroCastNoLimit(float,uint8);
MacroCastNoLimit(float,uint16);
MacroCastNoLimit(float,uint32);
MacroCastNoLimit(float,uint64);
MacroCastNoLimit(double,int8);
MacroCastNoLimit(double,int16);
MacroCastNoLimit(double,int32);
MacroCastNoLimit(double,int64);
MacroCastNoLimit(double,uint8);
MacroCastNoLimit(double,uint16);
MacroCastNoLimit(double,uint32);
MacroCastNoLimit(double,uint64);
MacroCastNoOp(double,double);
MacroCastNoOp(float,float);
MacroCastNoOp(QChar,QChar);
MacroCastNoOp(bool,bool);
template <>
inline bool CastConvert(QChar val) {
return (val != QChar(0));
}
template <>
inline QChar CastConvert(bool val) {
if (val) return QChar(1);
return QChar(0);
}
template <>
inline uint8 CastConvert(QChar val) {
return uint8(val.toAscii());
}
template <>
inline int8 CastConvert(QChar val) {
return int8(val.toAscii());
}
#define MacroCastFromQChar(outtype) \
template <> \
inline outtype CastConvert(QChar val) { \
return outtype(val.unicode()); \
}
MacroCastFromQChar(int16);
MacroCastFromQChar(int32);
MacroCastFromQChar(int64);
MacroCastFromQChar(uint16);
MacroCastFromQChar(uint32);
MacroCastFromQChar(uint64);
MacroCastFromQChar(float);
MacroCastFromQChar(double);
#define MacroCastToQChar(intype) \
template <> \
inline QChar CastConvert(intype val) { \
return QChar(uint32(val)); \
}
MacroCastToQChar(uint8);
#define MacroCastToQCharLower(intype) \
template <> \
inline QChar CastConvert(intype val) { \
if (val < 0) val = 0; \
return QChar(uint32(val)); \
}
MacroCastToQCharLower(int8);
MacroCastToQCharLower(int16);
#define MacroCastToQCharUpper(intype) \
template <> \
inline QChar CastConvert(intype val) { \
if (val > 16367) val = 16367; \
return QChar(uint32(val)); \
}
MacroCastToQCharUpper(uint16);
MacroCastToQCharUpper(uint32);
MacroCastToQCharUpper(uint64);
#define MacroCastToQCharViaInt(intype) \
template <> \
inline QChar CastConvert(intype val) { \
if (val < 0) val = 0; \
if (val > 16367) val = 16367; \
return QChar(uint32(val)); \
}
MacroCastToQCharViaInt(int32);
MacroCastToQCharViaInt(int64);
MacroCastToQCharViaInt(float);
MacroCastToQCharViaInt(double);
#endif
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