InterSystems IRIS Data Platform 2019.2  /  ObjectScript Reference

ObjectScript Reference
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Absolute value function.
n Any number.
$ZABS returns the absolute value of n.
Any number. Can be specified as a value, a variable, or an expression. The expression is evaluated, and the result converted to a positive value. Multiple plus and minus signs are permitted. Leading and trailing zeros are deleted.
For evaluation of mixed numeric strings and non-numeric strings, refer to Strings As Numbers in Using ObjectScript.
The following example returns the absolute value of the number you supply:
   READ "Input a number: ",num
   SET abs=$ZABS(num)
   WRITE "The absolute value of ",num," is ",abs
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Content Date/Time: 2019-08-23 05:35:26