Re: Converting packed decimal to a char array

On 2015-03-11 08:26, Tim Bronski wrote:

It works with all decimal lengths and positions. The move to a (30,0)
variable is because you need a common length for sprintf (or printf) but
the decimals can vary.

If fulldec is defined as 63,0 then it works for any size of packed variable.

Tim, your version was copying Len bytes in the memcpy which was about twice too much. This version calculates the number of bytes in the packed variable, and uses that for both the offset and the memcpy length.

void printdec(void *A, int Len, int Prec)
{
decimal(63,0) fulldec;
int offset;
int bytes = (Len / 2) + 1;
// Move packed number to a 63,0 variable.
offset=32 - bytes;
fulldec=0;
memcpy(((char *) &fulldec)+offset, A, bytes);
// Now print it.
printf("%D(63,*)\n", Prec, s.fulldec) ;