4 * The strntoumax() function and associated
11 static inline int digitval(int ch)
13 if (ch >= '0' && ch <= '9') {
15 } else if (ch >= 'A' && ch <= 'Z') {
17 } else if (ch >= 'a' && ch <= 'z') {
24 uintmax_t strntoumax(const char *nptr, char **endptr, int base, size_t n)
30 while (n && isspace((unsigned char)*nptr)) {
35 /* Single optional + or - */
36 if (n && *nptr == '-') {
40 } else if (n && *nptr == '+') {
45 if (n >= 2 && nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) {
49 } else if (n >= 1 && nptr[0] == '0') {
56 } else if (base == 16) {
57 if (n >= 2 && nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) {
63 while (n && (d = digitval(*nptr)) >= 0 && d < base) {
70 *endptr = (char *)nptr;
72 return minus ? -v : v;