SAS Certification Prep Guide, 4th Edition

Using Arithmetic and Logical Expressions

The %EVAL Function

The %EVAL function evaluates integer arithmetic or logical expressions. Logical expressions and arithmetic expressions are sequences of operators and operands forming sets of instructions that are evaluated to produce a result.

• An arithmetic expression contains an arithmetic operator.
• A logical expression contains a logical operator.

General form, %EVAL function: %EVAL(arithmetic or logical expression)

The %EVAL function

• translates integer strings and hexadecimal strings to integers
• translates tokens representing arithmetic, comparison, and logical operators to macro-level operators
• performs arithmetic and logical operations.

For arithmetic ...