static void swap()

in source/sigv4_quicksort.c [63:123]
31 lines of code
2 McCabe index (conditional complexity)

static void swap( void * pFirstItem,
                  void * pSecondItem,
                  size_t itemSize );

/**
 * @brief A helper function to perform quicksort on a subarray.
 *
 * @param[in] pArray The array to be sorted.
 * @param[in] low The low index of the array.
 * @param[in] high The high index of the array.
 * @param[in] itemSize The amount of memory per entry in the array.
 * @param[out] comparator The comparison function to determine if one item is less than another.
 */
static void quickSortHelper( void * pArray,
                             size_t low,
                             size_t high,
                             size_t itemSize,
                             ComparisonFunc_t comparator );

/**
 * @brief A helper function to partition a subarray using the last element
 * of the array as the pivot. All items smaller than the pivot end up
 * at its left while all items greater than end up at its right.
 *
 * @param[in] pArray The array to be sorted.
 * @param[in] low The low index of the array.
 * @param[in] high The high index of the array.
 * @param[in] itemSize The amount of memory per entry in the array.
 * @param[out] comparator The comparison function to determine if one item is less than another.
 *
 * @return The index of the pivot
 */
static size_t partition( void * pArray,
                         size_t low,
                         size_t high,
                         size_t itemSize,
                         ComparisonFunc_t comparator );

/*-----------------------------------------------------------*/

static void swap( void * pFirstItem,
                  void * pSecondItem,
                  size_t itemSize )
{
    uint8_t * pFirstByte = pFirstItem;
    uint8_t * pSecondByte = pSecondItem;
    size_t dataSize = itemSize;

    assert( pFirstItem != NULL );
    assert( pSecondItem != NULL );

    /* Swap one byte at a time. */
    while( dataSize-- > 0U )
    {
        uint8_t tmp = *pFirstByte;
        *pFirstByte = *pSecondByte;
        ++pFirstByte;
        *pSecondByte = tmp;
        ++pSecondByte;
    }
}