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# OS_NS_ctype.h File Reference

`#include "ace/config-all.h"`
`#include "ace/ACE_export.h"`
`#include "ace/OS_NS_ctype.inl"`

Include dependency graph for OS_NS_ctype.h:

This graph shows which files directly or indirectly include this file:

## Namespaces
namespace | ACE_OS
## Functions from <cctype>
Included are the functions defined in <cctype> and their <cwctype> equivalents. Since they are often implemented as macros, we don't use the same name here. Instead, we change by prepending "ace_".
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isalnum (ACE_TCHAR c)
| Returns true if the character is an alphanumeric character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isalpha (ACE_TCHAR c)
| Returns true if the character is an alphabetic character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_iscntrl (ACE_TCHAR c)
| Returns true if the character is a control character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isdigit (ACE_TCHAR c)
| Returns true if the character is a decimal-digit character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isgraph (ACE_TCHAR c)
| Returns true if the character is a printable character other than a space.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_islower (ACE_TCHAR c)
| Returns true if the character is a lowercase character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isprint (ACE_TCHAR c)
| Returns true if the character is a printable character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_ispunct (ACE_TCHAR c)
| Returns true if the character is a punctuation character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isspace (ACE_TCHAR c)
| Returns true if the character is a space character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isupper (ACE_TCHAR c)
| Returns true if the character is an uppercase character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_isxdigit (ACE_TCHAR c)
| Returns true if the character is a hexadecimal-digit character.
ACE_NAMESPACE_INLINE_FUNCTION int | ace_tolower (int c)
| Converts a character to lower case (char version).
ACE_NAMESPACE_INLINE_FUNCTION wint_t | ace_towlower (wint_t c)
| Converts a character to lower case (wchar_t version).
ACE_NAMESPACE_INLINE_FUNCTION int | ace_toupper (int c)
| Converts a character to upper case (char version).
ACE_NAMESPACE_INLINE_FUNCTION wint_t | ace_towupper (wint_t c)
| Converts a character to upper case (wchar_t version).
## Defines
#define | ACE_EXPORT_MACRO ACE_Export
#define | ACE_INLINE inline

## Detailed Description

Id
  OS_NS_ctype.h,v 1.7 2005/10/28 16:14:54 ossama Exp

Author:
  Douglas C. Schmidt <schmidt@cs.wustl.edu>

  Jesper S. M|ller<stophph@diku.dk>

  and a cast of thousands...

Originally in OS.h.

## Define Documentation

#define ACE_EXPORT_MACRO ACE_Export

#define ACE_INLINE inline

## Function Documentation

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE int ACE_OS::ace_isalnum | ( | ACE_TCHAR | c | ) |

| Returns true if the character is an alphanumeric character.

ACE_INLINE int ACE_OS::ace_isalpha | ( | ACE_TCHAR | c | ) |

| Returns true if the character is an alphabetic character.

ACE_INLINE int ACE_OS::ace_iscntrl | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a control character.

ACE_INLINE int ACE_OS::ace_isdigit | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a decimal-digit character.

ACE_INLINE int ACE_OS::ace_isgraph | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a printable character other than a space.

ACE_INLINE int ACE_OS::ace_islower | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a lowercase character.

ACE_INLINE int ACE_OS::ace_isprint | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a printable character.

ACE_INLINE int ACE_OS::ace_ispunct | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a punctuation character.

ACE_INLINE int ACE_OS::ace_isspace | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a space character.

ACE_INLINE int ACE_OS::ace_isupper | ( | ACE_TCHAR | c | ) |

| Returns true if the character is an uppercase character.

ACE_INLINE int ACE_OS::ace_isxdigit | ( | ACE_TCHAR | c | ) |

| Returns true if the character is a hexadecimal-digit character.

ACE_INLINE int ACE_OS::ace_tolower | ( | int | c | ) |

| Converts a character to lower case (char version).

ACE_INLINE int ACE_OS::ace_toupper | ( | int | c | ) |

| Converts a character to upper case (char version).

ACE_INLINE wint_t ACE_OS::ace_towlower | ( | wint_t | c | ) |

| Converts a character to lower case (wchar_t version).

ACE_INLINE wint_t ACE_OS::ace_towupper | ( | wint_t | c | ) |

| Converts a character to upper case (wchar_t version).