Reporting Language > Character Functions > CHKNUM: Checking a String for Numeric Format

CHKNUM: Checking a String for Numeric Format

How to:

The CHKNUM function checks a character string for numeric format. If the string contains a valid numeric format, CHKNUM returns the value 1. If the string contains characters that are not valid in a number, CHKNUM returns zero (0).

Syntax: How to Check the Format of a Character String 

CHKNUM(numchar, source_string, output)

where:

numchar

Integer

Is the number of characters in the string.

string

Alphanumeric

Is the character string to be checked.

output

Numeric

Example: Checking a String for Numeric Format

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