Hi Walter, Im trying to sort an array in
desending order.  compare_weight is working ok,
however compare_sp is not.  I understood that all
I needed to do was reverse the return values to
accomplish this. However, im finding that sometimes
the first two values in the sorted array are not in
descending order. Ive posted both compare functions below.

As always your help appreciated. Paul

/* WORKS OK, passed pointers to integer values */
int compare_weight(const void *v1, const void *v2)
{
int return_value;

return_value = (*(struct runners*)v1).weight - (*(struct runners*)v2).weight;

if(return_value < 0 )
{
return 28;
}
else if( return_value > 0 )
{
return -34;
}
else
{
return 0;
}
return return_value;
}

/* ERRORS IN SORETED ARRAY, passed poiners to float values */
int compare_sp(const void *v1, const void *v2)
{
int return_value;

return_value = (*(struct runners*)v1).sp - (*(struct runners*)v2).sp;

if(return_value < 0 )
{
return -34;
}
else if( return_value > 0 )
{
return 28;
}
else
{
return 0;
}
return return_value;
}

I would suggest that the .weight and .sp members are not both the same sort order (though you use them as if they were in the two sorts).

"Paul" <Paul_member@pathlink.com> wrote in message news:bq3afr$1ebl$1@digitaldaemon.com...
> Hi Walter, Im trying to sort an array in
> desending order.  compare_weight is working ok,
> however compare_sp is not.  I understood that all
> I needed to do was reverse the return values to
> accomplish this. However, im finding that sometimes
> the first two values in the sorted array are not in
> descending order. Ive posted both compare functions below.
>
> As always your help appreciated. Paul
>
> /* WORKS OK, passed pointers to integer values */
> int compare_weight(const void *v1, const void *v2)
> {
> int return_value;
>
> return_value = (*(struct runners*)v1).weight - (*(struct
runners*)v2).weight;
>
> if(return_value < 0 )
> {
> return 28;
> }
> else if( return_value > 0 )
> {
> return -34;
> }
> else
> {
> return 0;
> }
> return return_value;
> }
>
> /* ERRORS IN SORETED ARRAY, passed poiners to float values */
> int compare_sp(const void *v1, const void *v2)
> {
> int return_value;
>
> return_value = (*(struct runners*)v1).sp - (*(struct runners*)v2).sp;
>
> if(return_value < 0 )
> {
> return -34;
> }
> else if( return_value > 0 )
> {
> return 28;
> }
> else
> {
> return 0;
> }
> return return_value;
> }
>
>
>