5 static inline int isblank(int c)  in isblank()  argument
7 	return c == ' ' || c == '\t';  in isblank()
10 static inline int islower(int c)  in islower()  argument
12 	return c >= 'a' && c <= 'z';  in islower()
15 static inline int isupper(int c)  in isupper()  argument
17 	return c >= 'A' && c <= 'Z';  in isupper()
20 static inline int isalpha(int c)  in isalpha()  argument
22 	return isupper(c) || islower(c);  in isalpha()
25 static inline int isdigit(int c)  in isdigit()  argument
27 	return c >= '0' && c <= '9';  in isdigit()
30 static inline int isalnum(int c)  in isalnum()  argument
32 	return isalpha(c) || isdigit(c);  in isalnum()
35 static inline int isspace(int c)  in isspace()  argument
37         return c == ' ' || c == '\t' || c == '\r' || c == '\n' || c == '\v' || c == '\f';  in isspace()
40 static inline int toupper(int c)  in toupper()  argument
42 	return islower(c) ? c - 'a' + 'A' : c;  in toupper()
45 static inline int tolower(int c)  in tolower()  argument
47 	return isupper(c) ? c - 'A' + 'a' : c;  in tolower()