<QtEndian> - Endian Conversion Functions

The <QtEndian> header provides functions to convert between little and big endian representations of numbers. More...

Types

typedef qint16_be
typedef qint16_le
typedef qint32_be
typedef qint32_le
typedef qint64_be
typedef qint64_le
typedef quint16_be
typedef quint16_le
typedef quint32_be
typedef quint32_le
typedef quint64_be
typedef quint64_le

Functions

T qFromBigEndian(T src)
T qFromBigEndian(const void *src)
T qFromLittleEndian(T src)
T qFromLittleEndian(const void *src)
T qToBigEndian(T src)
void qToBigEndian(T src, void *dest)
T qToLittleEndian(T src)
void qToLittleEndian(T src, void *dest)

Type Documentation

typedef qint16_be

Typedef for QBEInteger<qint16>. This type is guaranteed to be stored in memory as a 16-bit big-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint16.

typedef qint16_le

Typedef for QLEInteger<qint16>. This type is guaranteed to be stored in memory as a 16-bit little-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint16.

typedef qint32_be

Typedef for QBEInteger<qint32>. This type is guaranteed to be stored in memory as a 32-bit big-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint32.

typedef qint32_le

Typedef for QLEInteger<qint32>. This type is guaranteed to be stored in memory as a 32-bit little-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint32.

typedef qint64_be

Typedef for QBEInteger<qint64>. This type is guaranteed to be stored in memory as a 64-bit big-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint64.

typedef qint64_le

Typedef for QLEInteger<qint64>. This type is guaranteed to be stored in memory as a 64-bit little-endian signed integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also qint64.

typedef quint16_be

Typedef for QBEInteger<quint16>. This type is guaranteed to be stored in memory as a 16-bit big-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint16.

typedef quint16_le

Typedef for QLEInteger<quint16>. This type is guaranteed to be stored in memory as a 16-bit little-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint16.

typedef quint32_be

Typedef for QBEInteger<quint32>. This type is guaranteed to be stored in memory as a 32-bit big-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint32.

typedef quint32_le

Typedef for QLEInteger<quint32>. This type is guaranteed to be stored in memory as a 32-bit little-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint32.

typedef quint64_be

Typedef for QBEInteger<quint64>. This type is guaranteed to be stored in memory as a 64-bit big-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint64.

typedef quint64_le

Typedef for QLEInteger<quint64>. This type is guaranteed to be stored in memory as a 64-bit little-endian unsigned integer on all platforms supported by Qt.

This typedef was introduced in Qt 5.10.

See also quint64.

Function Documentation

T qFromBigEndian(T src)

This is an overloaded function.

Converts src from big-endian byte order and returns the number in host byte order representation of that number. On CPU architectures where the host byte order is little-endian (such as x86) this will return src with the byte order swapped; otherwise it will return src unmodified.

This function was introduced in Qt 4.3.

T qFromBigEndian(const void *src)

Reads a big-endian number from memory location src and returns the number in the host byte order representation. On CPU architectures where the host byte order is little-endian (such as x86) this will swap the byte order; otherwise it will just read from src.

Note: Template type T can either be a qint16, qint32 or qint64. Other types of integers, e.g., qlong, are not applicable.

Note: Since Qt 5.7, the type of the src parameter is a void pointer.

There are no data alignment constraints for src.

This function was introduced in Qt 4.3.

See also qFromLittleEndian(), qToBigEndian(), and qToLittleEndian().

T qFromLittleEndian(T src)

This is an overloaded function.

Converts src from little-endian byte order and returns the number in host byte order representation of that number. On CPU architectures where the host byte order is big-endian (such as PowerPC) this will return src with the byte order swapped; otherwise it will return src unmodified.

This function was introduced in Qt 4.3.

T qFromLittleEndian(const void *src)

Reads a little-endian number from memory location src and returns the number in the host byte order representation. On CPU architectures where the host byte order is big-endian (such as PowerPC) this will swap the byte order; otherwise it will just read from src.

Note: Template type T can either be a qint16, qint32 or qint64. Other types of integers, e.g., qlong, are not applicable.

Note: Since Qt 5.7, the type of the src parameter is a void pointer.

There are no data alignment constraints for src.

This function was introduced in Qt 4.3.

See also qFromBigEndian(), qToBigEndian(), and qToLittleEndian().

T qToBigEndian(T src)

This is an overloaded function.

Converts src from host byte order and returns the number in big-endian byte order representation of that number. On CPU architectures where the host byte order is little-endian (such as x86) this will return src with the byte order swapped; otherwise it will return src unmodified.

This function was introduced in Qt 4.3.

void qToBigEndian(T src, void *dest)

Writes the number src with template type T to the memory location at dest in big-endian byte order.

Note that template type T can only be an integer data type (signed or unsigned).

There are no data alignment constraints for dest.

Note: Since Qt 5.7, the type of the dest parameter is a void pointer.

This function was introduced in Qt 4.3.

See also qFromBigEndian(), qFromLittleEndian(), and qToLittleEndian().

T qToLittleEndian(T src)

This is an overloaded function.

Converts src from host byte order and returns the number in little-endian byte order representation of that number. On CPU architectures where the host byte order is big-endian (such as PowerPC) this will return src with the byte order swapped; otherwise it will return src unmodified.

This function was introduced in Qt 4.3.

void qToLittleEndian(T src, void *dest)

Writes the number src with template type T to the memory location at dest in little-endian byte order.

Note that template type T can only be an integer data type (signed or unsigned).

There are no data alignment constraints for dest.

Note: Since Qt 5.7, the type of the dest parameter is a void pointer.

This function was introduced in Qt 4.3.

See also qFromBigEndian(), qFromLittleEndian(), and qToBigEndian().

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