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ENDIAN_SWAP16()

Endian-swap a 16-bit value in place

Synopsis:

#include <gulliver.h>

void ENDIAN_SWAP16( uint16_t * num );

Arguments:

num: A pointer to the number you want to convert.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The ENDIAN_SWAP16() macro endian-swaps the value pointed to by num in place.

Examples:

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

Classification:

QNX Neutrino

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes

Caveats:

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()