8 static inline int isspace(int c)
10 return (c <= ' '); /* Close enough */
13 static inline int digitval(int ch)
15 if (ch >= '0' && ch <= '9') {
17 } else if (ch >= 'A' && ch <= 'Z') {
19 } else if (ch >= 'a' && ch <= 'z') {
26 unsigned long strtoul(const char *nptr, char **endptr, int base)
32 while (isspace((unsigned char)*nptr)) {
36 /* Single optional + or - */
39 if (c == '-' || c == '+') {
46 if (nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) {
49 } else if (nptr[0] == '0') {
55 } else if (base == 16) {
56 if (nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) {
61 while ((d = digitval(*nptr)) >= 0 && d < base) {
67 *endptr = (char *)nptr;
69 return minus ? -v : v;