.. include:: ../check.rst

=======
ctype.h
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Functions
=========

.. list-table::
  :widths: auto
  :align: center
  :header-rows: 1

  * - Function
    - Implemented
    - C23 Standard Section
    - POSIX Docs
  * - isalnum
    - |check|
    - 7.4.1.1
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isalnum.html>`__
  * - isalnum_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isalnum_l.html>`__
  * - isalpha
    - |check|
    - 7.4.1.2
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isalpha.html>`__
  * - isalpha_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isalpha_l.html>`__
  * - isblank
    - |check|
    - 7.4.1.3
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isblank.html>`__
  * - isblank_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isblank_l.html>`__
  * - iscntrl
    - |check|
    - 7.4.1.4
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/iscntrl.html>`__
  * - iscntrl_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/iscntrl_l.html>`__
  * - isdigit
    - |check|
    - 7.4.1.5
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isdigit.html>`__
  * - isdigit_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isdigit_l.html>`__
  * - isgraph
    - |check|
    - 7.4.1.6
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isgraph.html>`__
  * - isgraph_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isgraph_l.html>`__
  * - islower
    - |check|
    - 7.4.1.7
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/islower.html>`__
  * - islower_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/islower_l.html>`__
  * - isprint
    - |check|
    - 7.4.1.8
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isprint.html>`__
  * - isprint_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isprint_l.html>`__
  * - ispunct
    - |check|
    - 7.4.1.9
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/ispunct.html>`__
  * - ispunct_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/ispunct_l.html>`__
  * - isspace
    - |check|
    - 7.4.1.10
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isspace.html>`__
  * - isspace_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isspace_l.html>`__
  * - isupper
    - |check|
    - 7.4.1.11
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isupper.html>`__
  * - isupper_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isupper_l.html>`__
  * - isxdigit
    - |check|
    - 7.4.1.12
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isxdigit.html>`__
  * - isxdigit_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/isxdigit_l.html>`__
  * - tolower
    - |check|
    - 7.4.2.1
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/tolower.html>`__
  * - tolower_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/tolower_l.html>`__
  * - toupper
    - |check|
    - 7.4.2.2
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/toupper.html>`__
  * - toupper_l
    - |check|
    -
    - `POSIX.1-2024 <https://pubs.opengroup.org/onlinepubs/9799919799/functions/toupper_l.html>`__