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_min.sas
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_min.sas
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%put NOTE: You have called the macro _MIN, 2017-11-08.;
%put NOTE: Copyright (c) 2001-2017 Rodney Sparapani;
%put;
/*
Author: Rodney Sparapani <[email protected]>
Created: 2001-00-00
This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this file; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* _MIN Documentation
Two-parameter function similar to the DATASTEP function MIN(),
i.e. if only one expression is supplied, then it is the min.
POSITIONAL Parameters
ARG1-ARG2 the two expressions to compare
*/
%macro _min(arg1, arg2);
%if %length(&arg2)=0 %then %eval(&arg1);
%else %if %length(&arg1)=0 %then %eval(&arg2);
%else %if (&arg1)<=(&arg2) %then %eval(&arg1);
%else %eval(&arg2);
%mend _min;
/*
%put MIN=%_min(7+2, 8);
%put MIN=%_min(9);
%put MIN=%_min( , 9);
%put MIN=%_min(g, 9);
%put MIN=%_min(a, b);
*/