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Endian-swap a 16-bit value in place
#include <gulliver.h>
void ENDIAN_SWAP16( uint16_t * num );
- num
- A pointer to the number you want to convert.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The ENDIAN_SWAP16() macro endian-swaps the value
pointed to by num in place.
Swap the endianness of a value:
#include <stdio.h>
#include <stdlib.h>
#include <gulliver.h>
#include <inttypes.h>
int main( void )
{
uint16_t val = 0x1234;
ENDIAN_SWAP16( &val );
printf( "val = 0x%04x\n", val );
return EXIT_SUCCESS;
}
This prints:
val = 0x3412
QNX Neutrino
Safety: | |
Cancellation point |
No |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
ENDIAN_SWAP16() is implemented as a macro.
ENDIAN_BE16(),
ENDIAN_BE32(),
ENDIAN_BE64(),
ENDIAN_LE16(),
ENDIAN_LE32(),
ENDIAN_LE64(),
ENDIAN_RET16(),
ENDIAN_RET32(),
ENDIAN_RET64(),
ENDIAN_SWAP32(),
ENDIAN_SWAP64(),
htonl(),
htons(),
ntohl(),
ntohs(),
UNALIGNED_RET16(),
UNALIGNED_RET32(),
UNALIGNED_RET64(),
UNALIGNED_PUT16(),
UNALIGNED_PUT32(),
UNALIGNED_PUT64()
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