Re: A Blast from the Past

From: Richard Hart <rhart@ATCDG.COM>
> It would be interesting to implement a simple macro
> pre-processor on the MI front-end (CRTMIPGM) that Leif has kindly
> provided.  However, I am not quite that advanced yet!
>

if what you want to do is just a simple macro facility, you don't need
the S/36 manual.
There are two kinds of macros:
1) complicated ones, like
%DEFINE  INCR $1
    ADDN(S)    $1, 1
%END

and used like:  INCR MY-VAR;
to produce
          ADDN(s) MYVAR,1;

2) simple ones, like
%DEFINE NN=128

and used like:
DCL DD MYDATA CHAR(#NN);
to produce
DCL DD MYDATA CHAR(128);

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1) is usually a bad idea
2) is really useful

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2) is also easy to make.