# Synopsis

PDX_BOOL ugn_IsNull(char *buf)

# Purpose

Check for NULL string.

# Description

Routine to determine if a character string has any data in it. Anything less than a blank or greater than a tilda, in ASCII, is a control character, and is regarded as null data. Routine searches string until either a significant character, or a null character is found.

# Input

## buf

String to check

# Return

PDX_TRUE or PDX_FALSE