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[/] [thor/] [trunk/] [software/] [c64libc/] [source/] [ctype.c] - Rev 41
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int isxdigit(char ch) { if (ch >= 'A' and ch <= 'F') return true; if (ch >= 'a' and ch <= 'f') return true; if (ch >= '0' and ch <= '9') return true; return false; } int isdigit(char ch) { if (ch >= '0' and ch <= '9') return true; return false; } int isalpha(char ch) { if (ch >= 'a' and ch <= 'z') return true; if (ch >= 'A' and ch <= 'Z') return true; return false; } int isalnum(char ch) { if (ch >= '0' and ch <= '9') return true; if (ch >= 'a' and ch <= 'z') return true; if (ch >= 'A' and ch <= 'Z') return true; return false; } // ToDo: add vertical tab int isspace(char ch) { if (ch==' ') return true; if (ch=='\t') return true; if (ch=='\n') return true; if (ch=='\r') return true; if (ch=='\f') return true; return false; } int tolower(char ch) { if (ch >= 'A' and ch <= 'Z') ch = ch - 'A' + 'a'; return ch; } int toupper(char ch) { if (ch >= 'a' and ch <= 'a') ch = ch - 'a' + 'A'; return ch; } int isupper(char ch) { return ch >= 'A' and ch <= 'Z'; } int islower(char ch) { return ch >= 'a' and ch <= 'z'; } int ispunct(char ch) { switch(ch) { case '!','"','#','%','&','\'','(',')',';','<','=','>','?', '[','\\',']','*','+',',','-','.','/',':','^': return true; default: return false; } } int isgraph(char ch) { return ispunct(ch) || isalnum(ch); } int isprint(char ch) { return isgraph(ch) || ch==' '; } int iscntrl(char ch) { switch(ch) { // ToDo: add VT case '\t','\f','\r','\n','\b','\007': return true; default: return false; } }
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