ENDIAN_SWAP64()

Endian-swap a 64-bit value in place

Synopsis:

#include <gulliver.h>

void ENDIAN_SWAP64( uint64_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_SWAP64() 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 )
{
    uint64_t val = 0x1234deadbeef5678LL;
    ENDIAN_SWAP16( &val );
    
    printf( "val = 0x%016x\n", val );

    return EXIT_SUCCESS;
}

This prints:

val = 0x7856efbeadde3412

Classification:

QNX Neutrino

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

Caveats:

ENDIAN_SWAP64() is implemented as a macro.