> Hi
>
> Does the S/390 and zSeries have BCD or BCD assist instructions
> implemented that are faster than BCD with integers? And if so, where can
> i find the exact format for these? I am perfectly willing, expecting
> actually, to access this from inline assembly in gcc.
>
> Erik
>
The mainframe supports two BCD formats - typically the "PACKED DECIMAL"
format is used.
The Systems/C C compiler for Linux/390 has support for a native data
type (_Decimal) which uses these instructions, so you can do things
like:
{
/* Declare 3 variables, each 10 digits wide, with 5 digits */
/* to the right of the decimal point. */
_Decimal(10,5) a, b, c;
a = b + c;
...
See http://www.dignus.com for more information.
- Dave Rivers -
--
[EMAIL PROTECTED] Work: (919) 676-0847
Get your mainframe programming tools at http://www.dignus.com
