Function type:
STRING
Extracts a portion of the specified string. The extracted portion starts at theindex
position and its length islen
.
The starting point of the extraction The number of characters to extract from the string stm_string_extract (’ABCDE’,0,2,status) = ’AB’
stm_string_extract (’ABCDE’,3,2,status) = ’DE’
stm_string_extract (’ABCDE’,0,7,status) = ’’
and status = stm_illegal_len