On Tue, 18 Aug 1998, Ossama Othman wrote:
> Hi again,
>
> > // "number" is the size of the array being byte swapped
> > swap4(void *dest, void *src, int number) {
>
> I forgot to mention that the code excerpt I posted was meant for swapping
> variables that are 4 bytes in size, e.g. floats and such.
It is possible to write a similar macro with automatic size detection,
using the sizeof operator:
#define swapbt(x) swapbytes((char *) &x,sizeof(x))
void swapbytes(char * p, int count)
{
int i=0;
int j=count-1;
char tmp;
while (i<j)
{
/* Swapping "in place" */
tmp=p[i];
p[i]=p[j];
p[j]=tmp;
i++;
j--;
}
}
However use this code in C++ very carefully, results of swapping the
object (particularly of class with virtual functions) may be very
interesting :-).
Please consider the code above to be public domain
Wojtek Zabolotny
[EMAIL PROTECTED]
