92 _cups_isalnum(int ch)			/* I - Character to test */  in _cups_isalnum()  argument
94   return ((ch >= '0' && ch <= '9') ||  in _cups_isalnum()
95           (ch >= 'A' && ch <= 'Z') ||  in _cups_isalnum()
96           (ch >= 'a' && ch <= 'z'));  in _cups_isalnum()
100 _cups_isalpha(int ch)			/* I - Character to test */  in _cups_isalpha()  argument
102   return ((ch >= 'A' && ch <= 'Z') ||  in _cups_isalpha()
103           (ch >= 'a' && ch <= 'z'));  in _cups_isalpha()
107 _cups_islower(int ch)			/* I - Character to test */  in _cups_islower()  argument
109   return (ch >= 'a' && ch <= 'z');  in _cups_islower()
113 _cups_isspace(int ch)			/* I - Character to test */  in _cups_isspace()  argument
115   return (ch == ' ' || ch == '\f' || ch == '\n' || ch == '\r' || ch == '\t' ||  in _cups_isspace()
116           ch == '\v');  in _cups_isspace()
120 _cups_isupper(int ch)			/* I - Character to test */  in _cups_isupper()  argument
122   return (ch >= 'A' && ch <= 'Z');  in _cups_isupper()
126 _cups_tolower(int ch)			/* I - Character to convert */  in _cups_tolower()  argument
128   return (_cups_isupper(ch) ? ch - 'A' + 'a' : ch);  in _cups_tolower()
132 _cups_toupper(int ch)			/* I - Character to convert */  in _cups_toupper()  argument
134   return (_cups_islower(ch) ? ch - 'a' + 'A' : ch);  in _cups_toupper()
137 extern int _cups_isalnum(int ch);
138 extern int _cups_isalpha(int ch);
139 extern int _cups_islower(int ch);
140 extern int _cups_isspace(int ch);
141 extern int _cups_isupper(int ch);
142 extern int _cups_tolower(int ch);
143 extern int _cups_toupper(int ch);