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Rick Aster: Professional SAS Programming Logic: Contents

Chapter 15
Program
TRUNC function to compare truncated numeric values

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DATA SHORT;
   A = .1;
   LENGTH A 4;
RUN;
DATA _NULL_;
   SET SHORT;
   IF A = .1 THEN PUT 'A is stored as exactly .1.';
   IF A = TRUNC(.1, 4) THEN PUT 'A is stored as approximately .1.';
RUN;