register UV retval = 0;
bool overflowed = FALSE;
char *tmp = s;
+ register UV n;
- while (len-- && *s && (tmp = strchr((char *) PL_hexdigit, *s))) {
- register UV n = retval << 4;
+ while (len-- && *s) {
+ tmp = strchr((char *) PL_hexdigit, *s++);
+ if (!tmp) {
+ if (*s == '_')
+ continue;
+ else {
+ --s;
+ if (PL_dowarn)
+ warn("Illegal hex digit ignored");
+ break;
+ }
+ }
+ n = retval << 4;
if (!overflowed && (n >> 4) != retval) {
warn("Integer overflow in hex number");
overflowed = TRUE;
}
retval = n | ((tmp - PL_hexdigit) & 15);
- s++;
- }
- if (PL_dowarn && !tmp) {
- warn("Illegal hex digit ignored");
}
*retlen = s - start;
return retval;