RTEMS POSIX API User's Guide
isalnum - Alphanumeric character predicate
isalpha - Alphabetic character predicate
isascii - ASCII character predicate
iscntrl - Control character predicate
isdigit - Decimal digit predicate
islower - Lower-case character predicate
isprint - Printable character predicates (isprint, isgraph)
ispunct - Punctuation character predicate
isspace - Whitespace character predicate
isupper - Uppercase character predicate
isxdigit - Hexadecimal digit predicate
toascii - Force integers to ASCII range
tolower - Translate characters to lower case
toupper - Translate characters to upper case
RTEMS POSIX API User's Guide
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