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apolitical
Obsidian | Level 7

Say I want to define a macro variable "num" to be 10 to the negative 2 power (0.01). I do:

 

%let num=%eval(10**(-2));
%put &num.;

 

but I get

 

%put &num.;
SYMBOLGEN: Macro variable NUM resolves to 0
0

 

 What's wrong here? Thanks.

1 ACCEPTED SOLUTION

Accepted Solutions
Reeza
Super User

To work with floating point numbers use %SYSEVALF().

 

http://blogs.sas.com/content/sastraining/2011/09/23/sas-authors-tip-macro-functions-eval-and-syseval...

 The %EVAL function evaluates expressions using integer arithmetic. The %SYSEVALF function evaluates expressions using floating point arithmetic.

 

 

%let num=%sysevalf(10**(-2));
%put &num.;

 

 

View solution in original post

2 REPLIES 2
Reeza
Super User

To work with floating point numbers use %SYSEVALF().

 

http://blogs.sas.com/content/sastraining/2011/09/23/sas-authors-tip-macro-functions-eval-and-syseval...

 The %EVAL function evaluates expressions using integer arithmetic. The %SYSEVALF function evaluates expressions using floating point arithmetic.

 

 

%let num=%sysevalf(10**(-2));
%put &num.;

 

 

apolitical
Obsidian | Level 7
That works great. Thank you.

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