Architecture-dependent handling of byte-ordering.
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Files |
| file | byteordering.c |
| | Byte-order handling implementation (license: GPLv2 or LGPLv2.1).
|
| file | byteordering.h |
| | Byte-order handling header (license: GPLv2 or LGPLv2.1).
|
Defines |
| #define | HTOL16(val) |
| | Converts a 16-bit integer from host byte order to little-endian byte order.
|
| #define | HTOL32(val) |
| | Converts a 32-bit integer from host byte order to little-endian byte order.
|
| #define | LTOH16(val) |
| | Converts a 16-bit integer from little-endian byte order to host byte order.
|
| #define | LTOH32(val) |
| | Converts a 32-bit integer from little-endian byte order to host byte order.
|
Functions |
| uint16_t | read16 (const uint8_t *p) |
| | Reads a 16-bit integer from memory in little-endian byte order.
|
| uint32_t | read32 (const uint8_t *p) |
| | Reads a 32-bit integer from memory in little-endian byte order.
|
| void | write16 (uint8_t *p, uint16_t i) |
| | Writes a 16-bit integer into memory in little-endian byte order.
|
| void | write32 (uint8_t *p, uint32_t i) |
| | Writes a 32-bit integer into memory in little-endian byte order.
|
| uint16_t | htol16 (uint16_t h) |
| | Converts a 16-bit integer from host byte order to little-endian byte order.
|
| uint32_t | htol32 (uint32_t h) |
| | Converts a 32-bit integer from host byte order to little-endian byte order.
|
| uint16_t | ltoh16 (uint16_t l) |
| | Converts a 16-bit integer from little-endian byte order to host byte order.
|
| uint32_t | ltoh32 (uint32_t l) |
| | Converts a 32-bit integer from little-endian byte order to host byte order.
|
Detailed Description
Architecture-dependent handling of byte-ordering.
Define Documentation
Converts a 16-bit integer from host byte order to little-endian byte order.
Use this macro for compile time constants only. For variable values use the function htol16() instead. This saves code size.
- Parameters:
-
| [in] | val | A 16-bit integer in host byte order. |
- Returns:
- The given 16-bit integer converted to little-endian byte order.
Converts a 32-bit integer from host byte order to little-endian byte order.
Use this macro for compile time constants only. For variable values use the function htol32() instead. This saves code size.
- Parameters:
-
| [in] | val | A 32-bit integer in host byte order. |
- Returns:
- The given 32-bit integer converted to little-endian byte order.
Converts a 16-bit integer from little-endian byte order to host byte order.
Use this macro for compile time constants only. For variable values use the function ltoh16() instead. This saves code size.
- Parameters:
-
| [in] | val | A 16-bit integer in little-endian byte order. |
- Returns:
- The given 16-bit integer converted to host byte order.
Converts a 32-bit integer from little-endian byte order to host byte order.
Use this macro for compile time constants only. For variable values use the function ltoh32() instead. This saves code size.
- Parameters:
-
| [in] | val | A 32-bit integer in little-endian byte order. |
- Returns:
- The given 32-bit integer converted to host byte order.
Function Documentation
| uint16_t htol16 |
( |
uint16_t |
h |
) |
|
Converts a 16-bit integer from host byte order to little-endian byte order.
Use this function on variable values instead of the macro HTOL16(). This saves code size.
- Parameters:
-
| [in] | h | A 16-bit integer in host byte order. |
- Returns:
- The given 16-bit integer converted to little-endian byte order.
| uint32_t htol32 |
( |
uint32_t |
h |
) |
|
Converts a 32-bit integer from host byte order to little-endian byte order.
Use this function on variable values instead of the macro HTOL32(). This saves code size.
- Parameters:
-
| [in] | h | A 32-bit integer in host byte order. |
- Returns:
- The given 32-bit integer converted to little-endian byte order.
| uint16_t ltoh16 |
( |
uint16_t |
l |
) |
|
Converts a 16-bit integer from little-endian byte order to host byte order.
Use this function on variable values instead of the macro LTOH16(). This saves code size.
- Parameters:
-
| [in] | l | A 16-bit integer in little-endian byte order. |
- Returns:
- The given 16-bit integer converted to host byte order.
| uint32_t ltoh32 |
( |
uint32_t |
l |
) |
|
Converts a 32-bit integer from little-endian byte order to host byte order.
Use this function on variable values instead of the macro LTOH32(). This saves code size.
- Parameters:
-
| [in] | l | A 32-bit integer in little-endian byte order. |
- Returns:
- The given 32-bit integer converted to host byte order.
| uint16_t read16 |
( |
const uint8_t * |
p |
) |
|
Reads a 16-bit integer from memory in little-endian byte order.
- Parameters:
-
| [in] | p | Pointer from where to read the integer. |
- Returns:
- The 16-bit integer read from memory.
| uint32_t read32 |
( |
const uint8_t * |
p |
) |
|
Reads a 32-bit integer from memory in little-endian byte order.
- Parameters:
-
| [in] | p | Pointer from where to read the integer. |
- Returns:
- The 32-bit integer read from memory.
| void write16 |
( |
uint8_t * |
p, |
|
|
uint16_t |
i | |
|
) |
| | |
Writes a 16-bit integer into memory in little-endian byte order.
- Parameters:
-
| [in] | p | Pointer where to write the integer to. |
| [in] | i | The 16-bit integer to write. |
| void write32 |
( |
uint8_t * |
p, |
|
|
uint32_t |
i | |
|
) |
| | |
Writes a 32-bit integer into memory in little-endian byte order.
- Parameters:
-
| [in] | p | Pointer where to write the integer to. |
| [in] | i | The 32-bit integer to write. |