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+.. COMMENT: This file was automatically generated from the file:
+.. COMMENT:    @NEWLIB_FILENAME@
+.. COMMENT: Generateed on: @DATE@
+
+.. isalnum:
+
+isalnum - Alphanumeric character predicate (GOAL)
+----------------------------------------------------------------
+.. index:: isalnum
+.. index:: alphanumeric character predicate
+.. index:: isalnum_l
+
+
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+	#include <ctype.h>
+	int isalnum(int c);
+
+	#include <ctype.h>
+	int isalnum_l(int c, locale_t locale);
+
+
+
+
+**STATUS CODES:**
+
+*isalnum*,*isalnum_l* return non-zero if ``c`` is a letter or a digit.
+
+
+
+**DESCRIPTION:**
+
+*isalnum* is a macro which classifies singlebyte charset values by table
+lookup.  It is a predicate returning non-zero for alphabetic or
+numeric ASCII characters, and *0* for other arguments.  It is defined
+only if ``c`` is representable as an unsigned char or if ``c`` is EOF.
+
+*isalnum_l* is like *isalnum* but performs the check based on the
+locale specified by the locale object locale.  If ``locale`` is
+LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
+
+You can use a compiled subroutine instead of the macro definition by
+undefining the macro using ``#undef isalnum`` or ``#undef isalnum_l``.
+
+
+**ORIGIN**
+
+The information in this section was generated from documentation
+included with the `Newlib C Library <https://sourceware.org/newlib/>`_.