isxdigit.cxx

来自「eCos1.31版」· CXX 代码 · 共 86 行

//===========================================================================
//
//      isxdigit.cxx
//
//      Real alternative for inline implementation of ANSI standard
//      isxdigit() ctype routine defined in section 7.3.1.11 of the standard
//
//===========================================================================
//####COPYRIGHTBEGIN####
//                                                                          
// -------------------------------------------                              
// The contents of this file are subject to the Red Hat eCos Public License 
// Version 1.1 (the "License"); you may not use this file except in         
// compliance with the License.  You may obtain a copy of the License at    
// http://www.redhat.com/                                                   
//                                                                          
// Software distributed under the License is distributed on an "AS IS"      
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
// License for the specific language governing rights and limitations under 
// the License.                                                             
//                                                                          
// The Original Code is eCos - Embedded Configurable Operating System,      
// released September 30, 1998.                                             
//                                                                          
// The Initial Developer of the Original Code is Red Hat.                   
// Portions created by Red Hat are                                          
// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
// All Rights Reserved.                                                     
// -------------------------------------------                              
//                                                                          
//####COPYRIGHTEND####
//===========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jlarmour
// Contributors:  jlarmour
// Date:        1998-02-13
// Purpose:     
// Description: 
// Usage:       
//
//####DESCRIPTIONEND####
//
//===========================================================================

// CONFIGURATION

#include <pkgconf/libc.h>   // Configuration header

// Include the C library?
#ifdef CYGPKG_LIBC     

// INCLUDES

#include <cyg/infra/cyg_type.h>     // Common type definitions and support

// We don't want the inline versions of ctype functions defined here

#ifdef CYGIMP_LIBC_CTYPE_INLINES
#undef CYGIMP_LIBC_CTYPE_INLINES
#endif

#include <ctype.h>                  // Main header for ctype functions
#include "clibincl/ctypesupp.hxx"   // Support for ctype functions

// EXPORTED SYMBOLS

externC int
isxdigit( int c ) CYGPRI_LIBC_WEAK_ALIAS("_isxdigit");


// FUNCTIONS

int
_isxdigit( int c )
{
    return ( _isdigit(c) ||
             (('a' <= c) && (c <= 'f')) ||
             (('A' <= c) && (c <= 'F')) );
} // _isxdigit()


#endif // ifdef CYGPKG_LIBC     

// EOF isxdigit.cxx