1 /** @file 2 Case conversion function implementations for <ctype.h> 3 4 The tolower function converts an uppercase letter to a corresponding 5 lowercase letter. If the argument is a character for which isupper 6 is true and there are one or more corresponding characters, as 7 specified by the current locale, for which islower is true, the tolower 8 function returns one of the corresponding characters (always the same one 9 for any given locale); otherwise, the argument is returned unchanged. 10 11 The toupper function converts a lowercase letter to a corresponding 12 uppercase letter. If the argument is a character for which islower is true 13 and there are one or more corresponding characters, as specified by the 14 current locale, for which isupper is true, the toupper function returns one 15 of the corresponding characters (always the same one for any given locale); 16 otherwise, the argument is returned unchanged. 17 18 Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR> 19 This program and the accompanying materials are licensed and made available under 20 the terms and conditions of the BSD License that accompanies this distribution. 21 The full text of the license may be found at 22 http://opensource.org/licenses/bsd-license. 23 24 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 25 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 26 **/ 27 #include <LibConfig.h> 28 29 #define NO_CTYPE_MACROS // So that we don't define the classification macros 30 #include <ctype.h> 31 32 /** The tolower function converts an uppercase letter to a corresponding 33 lowercase letter. 34 35 @param[in] c The character to be converted. 36 37 @return If the argument is a character for which isupper is true and 38 there are one or more corresponding characters, as specified by 39 the current locale, for which islower is true, the tolower 40 function returns one of the corresponding characters (always the 41 same one for any given locale); otherwise, the argument is 42 returned unchanged. 43 **/ 44 int 45 tolower( 46 IN int _c 47 ) 48 { 49 return (isupper(_c) ? _lConvT[_c] : _c); 50 } 51 52 /** The toupper function converts a lowercase letter to a corresponding 53 uppercase letter. 54 55 @param[in] c The character to be converted. 56 57 @return If the argument is a character for which islower is true and 58 there are one or more corresponding characters, as specified by 59 the current locale, for which isupper is true, the toupper 60 function returns one of the corresponding characters (always the 61 same one for any given locale); otherwise, the argument is 62 returned unchanged. 63 **/ 64 int 65 toupper( 66 IN int _c 67 ) 68 { 69 return (islower(_c) ? _uConvT[_c] : _c); 70 } 71
