qendian.h File Reference

#include <QtCore/qglobal.h>

Go to the source code of this file.

Functions
QT_BEGIN_HEADER QT_BEGIN_NAMESPACE void	qbswap_helper (const uchar *src, uchar *dest, int size)
template<typename T >
void	qbswap (const T src, uchar *dest)
template<typename T >
void	qToUnaligned (const T src, uchar *dest)
template<typename T >
T	qFromLittleEndian (const uchar *src)
template<>
quint64	qFromLittleEndian< quint64 > (const uchar *src)
template<>
quint32	qFromLittleEndian< quint32 > (const uchar *src)
template<>
quint16	qFromLittleEndian< quint16 > (const uchar *src)
template<>
qint64	qFromLittleEndian< qint64 > (const uchar *src)
template<>
qint32	qFromLittleEndian< qint32 > (const uchar *src)
template<>
qint16	qFromLittleEndian< qint16 > (const uchar *src)
template<class T >
T	qFromBigEndian (const uchar *src)
template<>
quint64	qFromBigEndian< quint64 > (const uchar *src)
template<>
quint32	qFromBigEndian< quint32 > (const uchar *src)
template<>
quint16	qFromBigEndian< quint16 > (const uchar *src)
template<>
qint64	qFromBigEndian< qint64 > (const uchar *src)
template<>
qint32	qFromBigEndian< qint32 > (const uchar *src)
template<>
qint16	qFromBigEndian< qint16 > (const uchar *src)
template<typename T >
T	qbswap (T source)
template<>
quint64	qbswap< quint64 > (quint64 source)
template<>
quint32	qbswap< quint32 > (quint32 source)
template<>
quint16	qbswap< quint16 > (quint16 source)
template<>
qint64	qbswap< qint64 > (qint64 source)
template<>
qint32	qbswap< qint32 > (qint32 source)
template<>
qint16	qbswap< qint16 > (qint16 source)
template<typename T >
T	qToBigEndian (T source)
template<typename T >
T	qFromBigEndian (T source)
template<typename T >
T	qToLittleEndian (T source)
template<typename T >
T	qFromLittleEndian (T source)
template<typename T >
void	qToBigEndian (T src, uchar *dest)
template<typename T >
void	qToLittleEndian (T src, uchar *dest)

---

Function Documentation

QT_BEGIN_HEADER QT_BEGIN_NAMESPACE void qbswap_helper	(	const uchar *	src,
		uchar *	dest,
		int	size
	)		[inline]

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Definition at line 64 of file qendian.h.

{
    for (int i = 0; i < size ; ++i) dest[i] = src[size - 1 - i];
}

void qbswap	(	const T	src,
		uchar *	dest
	)		[inline]

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Definition at line 75 of file qendian.h.

{
    qbswap_helper(reinterpret_cast<const uchar *>(&src), dest, sizeof(T));
}

void qToUnaligned	(	const T	src,
		uchar *	dest
	)		[inline]

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Definition at line 82 of file qendian.h.

{
    qMemCopy(dest, &src, sizeof(T));
}

T qFromLittleEndian

(

const uchar *

src

)

[inline]

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quint64 qFromLittleEndian< quint64 >

(

const uchar *

src

)

[inline]

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Definition at line 136 of file qendian.h.

{
    return 0
        | src[0]
        | src[1] * Q_UINT64_C(0x0000000000000100)
        | src[2] * Q_UINT64_C(0x0000000000010000)
        | src[3] * Q_UINT64_C(0x0000000001000000)
        | src[4] * Q_UINT64_C(0x0000000100000000)
        | src[5] * Q_UINT64_C(0x0000010000000000)
        | src[6] * Q_UINT64_C(0x0001000000000000)
        | src[7] * Q_UINT64_C(0x0100000000000000);
}

quint32 qFromLittleEndian< quint32 >

(

const uchar *

src

)

[inline]

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Definition at line 149 of file qendian.h.

{
    return 0
        | src[0]
        | src[1] * quint32(0x00000100)
        | src[2] * quint32(0x00010000)
        | src[3] * quint32(0x01000000);
}

quint16 qFromLittleEndian< quint16 >

(

const uchar *

src

)

[inline]

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Definition at line 158 of file qendian.h.

{
    return quint16(0
                   | src[0]
                   | src[1] * 0x0100);
}

qint64 qFromLittleEndian< qint64 >

(

const uchar *

src

)

[inline]

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Definition at line 166 of file qendian.h.

{ return static_cast<qint64>(qFromLittleEndian<quint64>(src)); }

qint32 qFromLittleEndian< qint32 >

(

const uchar *

src

)

[inline]

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Definition at line 169 of file qendian.h.

{ return static_cast<qint32>(qFromLittleEndian<quint32>(src)); }

qint16 qFromLittleEndian< qint16 >

(

const uchar *

src

)

[inline]

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Definition at line 172 of file qendian.h.

{ return static_cast<qint16>(qFromLittleEndian<quint16>(src)); }

T qFromBigEndian

(

const uchar *

src

)

[inline]

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quint64 qFromBigEndian< quint64 >

(

const uchar *

src

)

[inline]

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Definition at line 226 of file qendian.h.

{
    return 0
        | src[7]
        | src[6] * Q_UINT64_C(0x0000000000000100)
        | src[5] * Q_UINT64_C(0x0000000000010000)
        | src[4] * Q_UINT64_C(0x0000000001000000)
        | src[3] * Q_UINT64_C(0x0000000100000000)
        | src[2] * Q_UINT64_C(0x0000010000000000)
        | src[1] * Q_UINT64_C(0x0001000000000000)
        | src[0] * Q_UINT64_C(0x0100000000000000);
}

quint32 qFromBigEndian< quint32 >

(

const uchar *

src

)

[inline]

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Definition at line 240 of file qendian.h.

{
    return 0
        | src[3]
        | src[2] * quint32(0x00000100)
        | src[1] * quint32(0x00010000)
        | src[0] * quint32(0x01000000);
}

quint16 qFromBigEndian< quint16 >

(

const uchar *

src

)

[inline]

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Definition at line 250 of file qendian.h.

{
    return quint16( 0
                    | src[1]
                    | src[0] * quint16(0x0100));
}

qint64 qFromBigEndian< qint64 >

(

const uchar *

src

)

[inline]

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Definition at line 259 of file qendian.h.

{ return static_cast<qint64>(qFromBigEndian<quint64>(src)); }

qint32 qFromBigEndian< qint32 >

(

const uchar *

src

)

[inline]

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Definition at line 262 of file qendian.h.

{ return static_cast<qint32>(qFromBigEndian<quint32>(src)); }

qint16 qFromBigEndian< qint16 >

(

const uchar *

src

)

[inline]

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Definition at line 265 of file qendian.h.

{ return static_cast<qint16>(qFromBigEndian<quint16>(src)); }

T qbswap

(

T

source

)

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quint64 qbswap< quint64 >

(

quint64

source

)

[inline]

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Definition at line 290 of file qendian.h.

{
    return 0
        | ((source & Q_UINT64_C(0x00000000000000ff)) << 56)
        | ((source & Q_UINT64_C(0x000000000000ff00)) << 40)
        | ((source & Q_UINT64_C(0x0000000000ff0000)) << 24)
        | ((source & Q_UINT64_C(0x00000000ff000000)) << 8)
        | ((source & Q_UINT64_C(0x000000ff00000000)) >> 8)
        | ((source & Q_UINT64_C(0x0000ff0000000000)) >> 24)
        | ((source & Q_UINT64_C(0x00ff000000000000)) >> 40)
        | ((source & Q_UINT64_C(0xff00000000000000)) >> 56);
}

quint32 qbswap< quint32 >

(

quint32

source

)

[inline]

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Definition at line 303 of file qendian.h.

{
    return 0
        | ((source & 0x000000ff) << 24)
        | ((source & 0x0000ff00) << 8)
        | ((source & 0x00ff0000) >> 8)
        | ((source & 0xff000000) >> 24);
}

quint16 qbswap< quint16 >

(

quint16

source

)

[inline]

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Definition at line 312 of file qendian.h.

{
    return quint16( 0
                    | ((source & 0x00ff) << 8)
                    | ((source & 0xff00) >> 8) );
}

qint64 qbswap< qint64 >

(

qint64

source

)

[inline]

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Definition at line 321 of file qendian.h.

{
    return qbswap<quint64>(quint64(source));
}

qint32 qbswap< qint32 >

(

qint32

source

)

[inline]

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Definition at line 326 of file qendian.h.

{
    return qbswap<quint32>(quint32(source));
}

qint16 qbswap< qint16 >

(

qint16

source

)

[inline]

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Definition at line 331 of file qendian.h.

{
    return qbswap<quint16>(quint16(source));
}

T qToBigEndian

(

T

source

)

[inline]

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Definition at line 338 of file qendian.h.

{ return source; }

T qFromBigEndian

(

T

source

)

[inline]

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Definition at line 340 of file qendian.h.

{ return source; }

T qToLittleEndian

(

T

source

)

[inline]

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Definition at line 342 of file qendian.h.

{ return qbswap<T>(source); }

T qFromLittleEndian

(

T

source

)

[inline]

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Definition at line 344 of file qendian.h.

{ return qbswap<T>(source); }

void qToBigEndian	(	T	src,
		uchar *	dest
	)		[inline]

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Definition at line 346 of file qendian.h.

{ qToUnaligned<T>(src, dest); }

void qToLittleEndian	(	T	src,
		uchar *	dest
	)		[inline]

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Definition at line 348 of file qendian.h.

{ qbswap<T>(src, dest); }