On Tue, 25 Apr 2017 16:07:38 -0700, Charles Mills (charl...@mcn.org)
wrote about "Re: Can XLC printf() take "%D(*,*)"?" (in
<0c5901d2be18$bc7c4900$3574db00$@mcn.org>):
[snip]
> But I consistently get 'D(*,*' for output. Here is my exact format:
> "%*.*D(*,*)" and I am calling it with 20, 5, &decimal_number, precision,
> scale. (I started out with 20, 5 like in the example just to make my life
> easier.)
Your parameter sequence is wrong. You need to pass:
field width, by value
decimal places, by value
digitsof(x), by value
precisionof(x), by value
x, by value
in that order.
You should not be passing a pointer (&x); everything is passed by value.
> Here's a rub. The code is C++ and fixed point decimal support is limited to
> C ... but ... at the Spring TDM I asked a guy from Toronto why the heck the
> fixed point decimal support is only C and not C++. He told me -- very
> interesting story but I am going to play it safe here and assume it is under
> NDA. But he did tell me that I could call printf() from C++ and format fixed
> point decimal with no issues as printf() is a C function, not C++.
I'm not sure what "limited to C" means in a C++ context. After all, C is
largely a subset of C++, albeit with a few wrinkles these days. I could
understand that STL has no piping operator or I/O manipulators for
packed decimal, but the manipulation of packed decimal values in general
code should really be the same for C and C++. However, I did not write
the IBM compiler(s), so I don't know how much code the C and C++
compilers share.
> I had not added decimal.h to my code as there is no packed logic other than
> the printf() (data comes in from an external source). I added the #include
> but still no joy.
How are you declaring the decimal variables?
--
Regards,
Dave [RLU #314465]
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david.w.n...@googlemail.com (David W Noon)
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