Provided by: systemtap-doc_2.3-1ubuntu1_all bug

NAME

       function::isdigit - Checks for a digit

SYNOPSIS

           isdigit:long(str:string)

ARGUMENTS

       str
           string to check

DESCRIPTION

       Checks for a digit (0 through 9) as the first character of a string. Returns non-zero if
       true, and a zero if false.