isalnum, isalnum_l(3) |
alphanumeric single-byte character test |
isalpha, isalpha_l(3) |
alphabetic single-byte character test |
isascii(3) |
ASCII character test |
isblank, isblank_l(3) |
blank-space single-byte character test |
iscntrl, iscntrl_l(3) |
control single-byte character test |
isdigit, isdigit_l(3) |
decimal-digit single-byte character test |
isgraph, isgraph_l(3) |
printing single-byte character test (space character exclusive) |
islower, islower_l(3) |
lower-case single-byte character test |
isprint, isprint_l(3) |
printing single-byte character test (space character inclusive) |
ispunct, ispunct_l(3) |
punctuation single-byte character test |
isspace, isspace_l(3) |
whitespace single-byte character test |
isupper, isupper_l(3) |
upper-case singly-byte character test |
iswalnum, iswalnum_l, iswalpha, iswalpha_l, iswblank, iswblank_l, iswcntrl, iswcntrl_l, iswdigit, iswdigit_l, iswgraph, iswgraph_l, iswlower, iswlower_l, iswprint, iswprint_l, iswpunct, iswpunct_l, iswspace, iswspace_l, iswupper, iswupper_l, iswxdigit, iswxdigit_l(3) |
wide-character classification utilities |
iswctype, iswctype_l(3) |
test whether a wide character belongs to a character class |
isxdigit, isxdigit_l(3) |
hexadecimal-digit single-byte character test |
toascii(3) |
convert a byte to 7-bit ASCII |
tolower, _tolower, tolower_l(3) |
upper case to lower case letter conversion |
toupper, _toupper, toupper_l(3) |
lower case to upper case letter conversion |
towctrans, towctrans_l(3) |
convert a wide character with a specified map |
towlower, towlower_l, towupper, towupper_l(3) |
wide-character case letter conversion utilities |
wctrans, wctrans_l(3) |
get a character mapping identifier by name |
wctype, wctype_l(3) |
get a character class identifier by name |