+/* Cases for lowercase hex letters, and lowercase letters, all offset by N. */
+
+#define _C_CTYPE_LOWER_A_THRU_F_N(n) \
+ case 'a' + (n): case 'b' + (n): case 'c' + (n): case 'd' + (n): \
+ case 'e' + (n): case 'f' + (n)
+#define _C_CTYPE_LOWER_N(n) \
+ _C_CTYPE_LOWER_A_THRU_F_N(n): \
+ case 'g' + (n): case 'h' + (n): case 'i' + (n): case 'j' + (n): \
+ case 'k' + (n): case 'l' + (n): case 'm' + (n): case 'n' + (n): \
+ case 'o' + (n): case 'p' + (n): case 'q' + (n): case 'r' + (n): \
+ case 's' + (n): case 't' + (n): case 'u' + (n): case 'v' + (n): \
+ case 'w' + (n): case 'x' + (n): case 'y' + (n): case 'z' + (n)
+
+/* Cases for hex letters, digits, lower, punct, and upper. */
+
+#define _C_CTYPE_A_THRU_F \
+ _C_CTYPE_LOWER_A_THRU_F_N (0): \
+ _C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
+#define _C_CTYPE_DIGIT \
+ case '0': case '1': case '2': case '3': \
+ case '4': case '5': case '6': case '7': \
+ case '8': case '9'
+#define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
+#define _C_CTYPE_PUNCT \
+ case '!': case '"': case '#': case '$': \
+ case '%': case '&': case '\'': case '(': \
+ case ')': case '*': case '+': case ',': \
+ case '-': case '.': case '/': case ':': \
+ case ';': case '<': case '=': case '>': \
+ case '?': case '@': case '[': case '\\': \
+ case ']': case '^': case '_': case '`': \
+ case '{': case '|': case '}': case '~'
+#define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')
+
+
+/* Function definitions. */