1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #if defined(LIBC_SCCS) && !defined(lint) 9 static char sccsid[] = "@(#)isctype.c 5.6 (Berkeley) 03/13/92"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 #define _ANSI_LIBRARY 13 #include <ctype.h> 14 15 #undef isalnum 16 isalnum(c) 17 int c; 18 { 19 return ((__ctype + 1)[c] & (_U|_L|_N)); 20 } 21 22 #undef isalpha 23 isalpha(c) 24 int c; 25 { 26 return ((__ctype + 1)[c] & (_U|_L)); 27 } 28 29 #undef isascii 30 isascii(c) 31 int c; 32 { 33 return (c <= 0177); 34 } 35 36 #undef isblank 37 isblank(c) 38 int c; 39 { 40 return (c == '\t' || c == ' '); 41 } 42 43 #undef iscntrl 44 iscntrl(c) 45 int c; 46 { 47 return ((__ctype + 1)[c] & _C); 48 } 49 50 #undef isdigit 51 isdigit(c) 52 int c; 53 { 54 return ((__ctype + 1)[c] & _N); 55 } 56 57 #undef isgraph 58 isgraph(c) 59 int c; 60 { 61 return ((__ctype + 1)[c] & (_P|_U|_L|_N)); 62 } 63 64 #undef islower 65 islower(c) 66 int c; 67 { 68 return ((__ctype + 1)[c] & _L); 69 } 70 71 #undef isprint 72 isprint(c) 73 int c; 74 { 75 return ((__ctype + 1)[c] & (_P|_U|_L|_N|_B)); 76 } 77 78 #undef ispunct 79 ispunct(c) 80 int c; 81 { 82 return ((__ctype + 1)[c] & _P); 83 } 84 85 #undef isspace 86 isspace(c) 87 int c; 88 { 89 return ((__ctype + 1)[c] & _S); 90 } 91 92 #undef isupper 93 isupper(c) 94 int c; 95 { 96 return ((__ctype + 1)[c] & _U); 97 } 98 99 #undef isxdigit 100 isxdigit(c) 101 int c; 102 { 103 return ((__ctype + 1)[c] & (_N|_X)); 104 } 105 106 #undef toascii 107 toascii(c) 108 int c; 109 { 110 return (c & 0177); 111 } 112 113 #undef tolower 114 tolower(c) 115 int c; 116 { 117 return (isupper(c) ? c - 'A' + 'a' : c); 118 } 119 120 #undef toupper 121 toupper(c) 122 int c; 123 { 124 return (islower(c) ? c - 'a' + 'A' : c); 125 } 126